recount mixes if mix data unavailable, correct mix status cell to remove mix progress from non-mixing utxos, show registered inputs total in tooltip

src/main/java/com/sparrowwallet/sparrow/control/MixStatusCell.java

@@ -10,8 +10,10 @@ import com.sparrowwallet.sparrow.wallet.Entry;
 import com.sparrowwallet.sparrow.wallet.UtxoEntry;
 import com.sparrowwallet.sparrow.whirlpool.Whirlpool;
 import com.sparrowwallet.sparrow.whirlpool.WhirlpoolException;
+import javafx.animation.FadeTransition;
 import javafx.geometry.Pos;
 import javafx.scene.control.*;
+import javafx.util.Duration;
 import org.controlsfx.glyphfont.Glyph;
 import org.controlsfx.tools.Platform;
 
@@ -46,7 +48,7 @@ public class MixStatusCell extends TreeTableCell<Entry, UtxoEntry.MixStatus> {
             } else if(mixStatus.getMixFailReason() != null) {
                 setMixFail(mixStatus.getMixFailReason(), mixStatus.getMixError());
             } else if(mixStatus.getMixProgress() != null) {
-                setMixProgress(mixStatus.getMixProgress());
+                setMixProgress(mixStatus.getUtxoEntry(), mixStatus.getMixProgress());
             } else {
                 setGraphic(null);
                 setTooltip(null);
@@ -65,13 +67,28 @@ public class MixStatusCell extends TreeTableCell<Entry, UtxoEntry.MixStatus> {
 
     private void setMixFail(MixFailReason mixFailReason, String mixError) {
         if(mixFailReason != MixFailReason.CANCEL) {
-            setGraphic(getFailGlyph());
+            if(getGraphic() != null && getGraphic().getUserData() == mixFailReason) {
+                //Fade transition already set
+                return;
+            }
+
+            Glyph failGlyph = getFailGlyph();
+            setGraphic(failGlyph);
             Tooltip tt = new Tooltip();
             tt.setText(mixFailReason.getMessage() + (mixError == null ? "" : ": " + mixError) +
                     "\nMix failures are generally caused by peers disconnecting during a mix." +
                     "\nMake sure your internet connection is stable and the computer is configured to prevent sleeping." +
                     "\nTo prevent sleeping, use the " + getPlatformSleepConfig() + " or enable the function in the Tools menu.");
             setTooltip(tt);
+
+            FadeTransition ft = new FadeTransition(Duration.hours(1), failGlyph);
+            ft.setFromValue(1);
+            ft.setToValue(0);
+            ft.setOnFinished(event -> {
+                setTooltip(null);
+            });
+            ft.play();
+            failGlyph.setUserData(mixFailReason);
         } else {
             setGraphic(null);
             setTooltip(null);
@@ -89,14 +106,28 @@ public class MixStatusCell extends TreeTableCell<Entry, UtxoEntry.MixStatus> {
         return "system power settings";
     }
 
-    private void setMixProgress(MixProgress mixProgress) {
+    private void setMixProgress(UtxoEntry utxoEntry, MixProgress mixProgress) {
         if(mixProgress.getMixStep() != MixStep.FAIL) {
             ProgressIndicator progressIndicator = getProgressIndicator();
             progressIndicator.setProgress(mixProgress.getMixStep().getProgressPercent() == 100 ? -1 : mixProgress.getMixStep().getProgressPercent() / 100.0);
             setGraphic(progressIndicator);
             Tooltip tt = new Tooltip();
-            tt.setText(mixProgress.getMixStep().getMessage().substring(0, 1).toUpperCase() + mixProgress.getMixStep().getMessage().substring(1));
+            String status = mixProgress.getMixStep().getMessage().substring(0, 1).toUpperCase() + mixProgress.getMixStep().getMessage().substring(1);
+            tt.setText(status);
             setTooltip(tt);
+
+            if(mixProgress.getMixStep() == MixStep.REGISTERED_INPUT) {
+                tt.setOnShowing(event -> {
+                    Whirlpool whirlpool = AppServices.getWhirlpoolServices().getWhirlpool(utxoEntry.getWallet());
+                    Whirlpool.RegisteredInputsService registeredInputsService = new Whirlpool.RegisteredInputsService(whirlpool, mixProgress.getPoolId());
+                    registeredInputsService.setOnSucceeded(eventStateHandler -> {
+                        if(registeredInputsService.getValue() != null) {
+                            tt.setText(status + " (1 of " + registeredInputsService.getValue() + ")");
+                        }
+                    });
+                    registeredInputsService.start();
+                });
+            }
         } else {
             setGraphic(null);
             setTooltip(null);

src/main/java/com/sparrowwallet/sparrow/io/Config.java

@@ -1,6 +1,7 @@
 package com.sparrowwallet.sparrow.io;
 
 import com.google.gson.*;
+import com.samourai.whirlpool.client.wallet.beans.IndexRange;
 import com.sparrowwallet.drongo.BitcoinUnit;
 import com.sparrowwallet.sparrow.Mode;
 import com.sparrowwallet.sparrow.Theme;
@@ -40,9 +41,10 @@ public class Config {
     private boolean openWalletsInNewWindows = false;
     private boolean hideEmptyUsedAddresses = false;
     private boolean showTransactionHex = true;
-    private boolean showLoadingLog = false;
+    private boolean showLoadingLog = true;
     private boolean showUtxosChart = true;
     private boolean preventSleep = false;
+    private IndexRange postmixIndexRange = IndexRange.FULL;
     private List<File> recentWalletFiles;
     private Integer keyDerivationPeriod;
     private File hwi;
@@ -288,6 +290,15 @@ public class Config {
         this.preventSleep = preventSleep;
     }
 
+    public IndexRange getPostmixIndexRange() {
+        return postmixIndexRange;
+    }
+
+    public void setPostmixIndexRange(IndexRange postmixIndexRange) {
+        this.postmixIndexRange = postmixIndexRange;
+        flush();
+    }
+
     public List<File> getRecentWalletFiles() {
         return recentWalletFiles;
     }

src/main/java/com/sparrowwallet/sparrow/wallet/SendController.java

@@ -4,7 +4,6 @@ import com.google.common.eventbus.Subscribe;
 import com.samourai.whirlpool.client.whirlpool.beans.Pool;
 import com.sparrowwallet.drongo.BitcoinUnit;
 import com.sparrowwallet.drongo.KeyPurpose;
-import com.sparrowwallet.drongo.SecureString;
 import com.sparrowwallet.drongo.address.InvalidAddressException;
 import com.sparrowwallet.drongo.protocol.Sha256Hash;
 import com.sparrowwallet.drongo.protocol.Transaction;

src/main/java/com/sparrowwallet/sparrow/wallet/UtxoEntry.java

@@ -4,6 +4,7 @@ import com.samourai.whirlpool.client.mix.listener.MixFailReason;
 import com.samourai.whirlpool.client.mix.listener.MixStep;
 import com.samourai.whirlpool.client.wallet.beans.MixProgress;
 import com.samourai.whirlpool.protocol.beans.Utxo;
+import com.sparrowwallet.drongo.KeyPurpose;
 import com.sparrowwallet.drongo.address.Address;
 import com.sparrowwallet.drongo.wallet.*;
 import com.sparrowwallet.sparrow.AppServices;
@@ -151,12 +152,12 @@ public class UtxoEntry extends HashIndexEntry {
                 return wallet.getUtxoMixData(getHashIndex());
             }
 
+            //Mix data not available - recount (and store if WhirlpoolWallet is running)
             Whirlpool whirlpool = AppServices.getWhirlpoolServices().getWhirlpool(wallet);
-            if(whirlpool != null) {
+            if(whirlpool != null && getUtxoEntry().getWallet().getStandardAccountType() == StandardAccount.WHIRLPOOL_POSTMIX && node.getKeyPurpose() == KeyPurpose.RECEIVE) {
-                UtxoMixData utxoMixData = whirlpool.getMixData(getHashIndex());
+                int mixesDone = whirlpool.recountMixesDone(getUtxoEntry().getWallet(), getHashIndex());
-                if(utxoMixData != null) {
+                whirlpool.setMixesDone(getHashIndex(), mixesDone);
-                    return utxoMixData;
+                return new UtxoMixData(mixesDone, null);
-                }
             }
 
             return new UtxoMixData(getUtxoEntry().getWallet().getStandardAccountType() == StandardAccount.WHIRLPOOL_POSTMIX ? 1 : 0, null);

src/main/java/com/sparrowwallet/sparrow/wallet/UtxosController.java

@@ -502,6 +502,10 @@ public class UtxosController extends WalletFormController implements Initializab
         utxosTable.updateHistoryStatus(event);
     }
 
+    @Subscribe
+    public void newBlock(NewBlockEvent event) {
+        getWalletForm().getWalletUtxosEntry().updateMixProgress();
+    }
 
     @Subscribe
     public void bwtSyncStatus(BwtSyncStatusEvent event) {

src/main/java/com/sparrowwallet/sparrow/wallet/WalletUtxosEntry.java

@@ -12,7 +12,7 @@ public class WalletUtxosEntry extends Entry {
     public WalletUtxosEntry(Wallet wallet) {
         super(wallet, wallet.getName(), wallet.getWalletUtxos().entrySet().stream().map(entry -> new UtxoEntry(wallet, entry.getKey(), HashIndexEntry.Type.OUTPUT, entry.getValue())).collect(Collectors.toList()));
         calculateDuplicates();
-        retrieveMixProgress();
+        updateMixProgress();
     }
 
     @Override
@@ -38,13 +38,15 @@ public class WalletUtxosEntry extends Entry {
         }
     }
 
-    protected void retrieveMixProgress() {
+    public void updateMixProgress() {
         Whirlpool whirlpool = AppServices.getWhirlpoolServices().getWhirlpool(getWallet());
         if(whirlpool != null) {
             for(Entry entry : getChildren()) {
                 UtxoEntry utxoEntry = (UtxoEntry)entry;
                 MixProgress mixProgress = whirlpool.getMixProgress(utxoEntry.getHashIndex());
-                utxoEntry.setMixProgress(mixProgress);
+                if(mixProgress != null || utxoEntry.getMixStatus() == null || (utxoEntry.getMixStatus().getMixFailReason() == null && utxoEntry.getMixStatus().getNextMixUtxo() == null)) {
+                    utxoEntry.setMixProgress(mixProgress);
+                }
             }
         }
     }
@@ -62,6 +64,6 @@ public class WalletUtxosEntry extends Entry {
         getChildren().removeAll(entriesRemoved);
 
         calculateDuplicates();
-        retrieveMixProgress();
+        updateMixProgress();
     }
 }

src/main/java/com/sparrowwallet/sparrow/whirlpool/Whirlpool.java

@@ -25,18 +25,15 @@ import com.sparrowwallet.drongo.ExtendedKey;
 import com.sparrowwallet.drongo.KeyPurpose;
 import com.sparrowwallet.drongo.Network;
 import com.sparrowwallet.drongo.Utils;
-import com.sparrowwallet.drongo.protocol.ScriptType;
+import com.sparrowwallet.drongo.protocol.*;
-import com.sparrowwallet.drongo.protocol.Sha256Hash;
-import com.sparrowwallet.drongo.protocol.Transaction;
-import com.sparrowwallet.drongo.protocol.TransactionOutput;
 import com.sparrowwallet.drongo.wallet.*;
 import com.sparrowwallet.nightjar.http.JavaHttpClientService;
 import com.sparrowwallet.nightjar.stomp.JavaStompClientService;
-import com.sparrowwallet.nightjar.tor.WhirlpoolTorClientService;
 import com.sparrowwallet.sparrow.AppServices;
 import com.sparrowwallet.sparrow.EventManager;
 import com.sparrowwallet.sparrow.event.WhirlpoolMixEvent;
 import com.sparrowwallet.sparrow.event.WhirlpoolMixSuccessEvent;
+import com.sparrowwallet.sparrow.io.Config;
 import com.sparrowwallet.sparrow.wallet.UtxoEntry;
 import com.sparrowwallet.sparrow.whirlpool.dataPersister.SparrowDataPersister;
 import com.sparrowwallet.sparrow.whirlpool.dataSource.SparrowDataSource;
@@ -49,6 +46,7 @@ import javafx.beans.property.SimpleBooleanProperty;
 import javafx.concurrent.ScheduledService;
 import javafx.concurrent.Service;
 import javafx.concurrent.Task;
+import javafx.util.Duration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -75,6 +73,7 @@ public class Whirlpool {
     private HD_Wallet hdWallet;
     private String walletId;
     private String mixToWalletId;
+    private boolean resyncMixesDone;
 
     private StartupService startupService;
 
@@ -95,10 +94,14 @@ public class Whirlpool {
         this.tx0Service = new Tx0Service(config);
 
         WhirlpoolEventService.getInstance().register(this);
+
+        StatusReporterService statusReporterService = new StatusReporterService(this);
+        statusReporterService.setPeriod(Duration.minutes(1));
+        statusReporterService.start();
     }
 
     private WhirlpoolWalletConfig computeWhirlpoolWalletConfig(HostAndPort torProxy) {
-        DataPersisterFactory dataPersisterFactory = (whirlpoolWallet, bip44w) -> new SparrowDataPersister(whirlpoolWallet);
+        DataPersisterFactory dataPersisterFactory = (whirlpoolWallet, bip44w) -> new SparrowDataPersister(whirlpoolWallet, config.getPersistDelaySeconds());
         DataSourceFactory dataSourceFactory = (whirlpoolWallet, bip44w, dataPersister) -> new SparrowDataSource(whirlpoolWallet, bip44w, dataPersister);
 
         boolean onion = (torProxy != null);
@@ -108,9 +111,20 @@ public class Whirlpool {
         WhirlpoolWalletConfig whirlpoolWalletConfig = new WhirlpoolWalletConfig(dataSourceFactory, httpClientService, stompClientService, torClientService, serverApi, whirlpoolServer.getParams(), false);
         whirlpoolWalletConfig.setDataPersisterFactory(dataPersisterFactory);
         whirlpoolWalletConfig.setPartner("SPARROW");
+        whirlpoolWalletConfig.setIndexRangePostmix(Config.get().getPostmixIndexRange());
         return whirlpoolWalletConfig;
     }
 
+    public Pool getPool(String poolId) {
+        try {
+            return getPools(null).stream().filter(pool -> pool.getPoolId().equals(poolId)).findFirst().orElse(null);
+        } catch(Exception e) {
+            log.error("Error retrieving pools", e);
+        }
+
+        return null;
+    }
+
     public Collection<Pool> getPools(Long totalUtxoValue) throws Exception {
         this.poolSupplier.load();
         if(totalUtxoValue == null) {
@@ -233,18 +247,73 @@ public class Whirlpool {
 
         WhirlpoolUtxo whirlpoolUtxo = whirlpoolWalletService.whirlpoolWallet().getUtxoSupplier().findUtxo(utxo.getHashAsString(), (int)utxo.getIndex());
         if(whirlpoolUtxo != null && whirlpoolUtxo.getUtxoState() != null) {
-            return whirlpoolUtxo.getUtxoState().getMixProgress();
+            MixProgress mixProgress = whirlpoolUtxo.getUtxoState().getMixProgress();
+            if(mixProgress != null && !isMixing(utxo)) {
+                log.debug("Utxo " + utxo + " mix state is " + whirlpoolUtxo.getUtxoState() + " but utxo is not mixing");
+                return null;
+            }
+
+            return mixProgress;
         }
 
         return null;
     }
 
+    private boolean isMixing(BlockTransactionHashIndex utxo) {
+        if(whirlpoolWalletService.whirlpoolWallet() == null || !whirlpoolWalletService.whirlpoolWallet().isStarted()) {
+            return false;
+        }
+
+        return whirlpoolWalletService.whirlpoolWallet().getMixingState().getUtxosMixing().stream().map(WhirlpoolUtxo::getUtxo).anyMatch(uo -> uo.tx_hash.equals(utxo.getHashAsString()) && uo.tx_output_n == (int)utxo.getIndex());
+    }
+
     public void refreshUtxos() {
         if(whirlpoolWalletService.whirlpoolWallet() != null) {
             whirlpoolWalletService.whirlpoolWallet().refreshUtxos();
         }
     }
 
+    private void resyncMixesDone(Whirlpool whirlpool, Wallet postmixWallet) {
+        Set<BlockTransactionHashIndex> receiveUtxos = postmixWallet.getWalletUtxos().entrySet().stream()
+                .filter(entry -> entry.getValue().getKeyPurpose() == KeyPurpose.RECEIVE).map(Map.Entry::getKey).collect(Collectors.toSet());
+        for(BlockTransactionHashIndex utxo : receiveUtxos) {
+            int mixesDone = recountMixesDone(postmixWallet, utxo);
+            whirlpool.setMixesDone(utxo, mixesDone);
+        }
+    }
+
+    public int recountMixesDone(Wallet postmixWallet, BlockTransactionHashIndex postmixUtxo) {
+        int mixesDone = 0;
+        Set<BlockTransactionHashIndex> walletTxos = postmixWallet.getWalletTxos().entrySet().stream()
+                .filter(entry -> entry.getValue().getKeyPurpose() == KeyPurpose.RECEIVE).map(Map.Entry::getKey).collect(Collectors.toSet());
+        BlockTransaction blkTx = postmixWallet.getTransactions().get(postmixUtxo.getHash());
+
+        while(blkTx != null) {
+            mixesDone++;
+            List<TransactionInput> inputs = blkTx.getTransaction().getInputs();
+            blkTx = null;
+            for(TransactionInput txInput : inputs) {
+                BlockTransaction inputTx = postmixWallet.getTransactions().get(txInput.getOutpoint().getHash());
+                if(inputTx != null && walletTxos.stream().anyMatch(txo -> txo.getHash().equals(inputTx.getHash()) && txo.getIndex() == txInput.getOutpoint().getIndex()) && inputTx.getTransaction() != null) {
+                    blkTx = inputTx;
+                }
+            }
+        }
+
+        return mixesDone;
+    }
+
+    public void setMixesDone(BlockTransactionHashIndex utxo, int mixesDone) {
+        if(whirlpoolWalletService.whirlpoolWallet() == null) {
+            return;
+        }
+
+        WhirlpoolUtxo whirlpoolUtxo = whirlpoolWalletService.whirlpoolWallet().getUtxoSupplier().findUtxo(utxo.getHashAsString(), (int)utxo.getIndex());
+        if(whirlpoolUtxo != null) {
+            whirlpoolUtxo.setMixsDone(mixesDone);
+        }
+    }
+
     public boolean hasWallet() {
         return hdWallet != null;
     }
@@ -385,10 +454,6 @@ public class Whirlpool {
         config.setScode(scode);
     }
 
-    public Tx0FeeTarget getTx0FeeTarget() {
-        return tx0FeeTarget;
-    }
-
     public void setTx0FeeTarget(Tx0FeeTarget tx0FeeTarget) {
         this.tx0FeeTarget = tx0FeeTarget;
     }
@@ -401,6 +466,10 @@ public class Whirlpool {
         return mixToWalletId;
     }
 
+    public void setResyncMixesDone(boolean resyncMixesDone) {
+        this.resyncMixesDone = resyncMixesDone;
+    }
+
     public void setMixToWallet(String mixToWalletId, Integer minMixes) {
         if(mixToWalletId == null) {
             config.setExternalDestination(null);
@@ -488,6 +557,15 @@ public class Whirlpool {
         if(e.getWhirlpoolWallet() == whirlpoolWalletService.whirlpoolWallet()) {
             log.info("Mixing to " + e.getWhirlpoolWallet().getConfig().getExternalDestination());
             mixingProperty.set(true);
+
+            if(resyncMixesDone) {
+                Wallet wallet = AppServices.get().getWallet(walletId);
+                if(wallet != null) {
+                    Wallet postmixWallet = getStandardAccountWallet(WhirlpoolAccount.POSTMIX, wallet);
+                    resyncMixesDone(this, postmixWallet);
+                    resyncMixesDone = false;
+                }
+            }
         }
     }
 
@@ -632,6 +710,54 @@ public class Whirlpool {
         }
     }
 
+    public static class RegisteredInputsService extends Service<Integer> {
+        private final Whirlpool whirlpool;
+        private final String poolId;
+
+        public RegisteredInputsService(Whirlpool whirlpool, String poolId) {
+            this.whirlpool = whirlpool;
+            this.poolId = poolId;
+        }
+
+        @Override
+        protected Task<Integer> createTask() {
+            return new Task<>() {
+                protected Integer call() {
+                    Pool pool = whirlpool.getPool(poolId);
+                    if(pool != null) {
+                        return pool.getNbRegistered();
+                    }
+
+                    return null;
+                }
+            };
+        }
+    }
+
+    private static class StatusReporterService extends ScheduledService<Boolean> {
+        private final Whirlpool whirlpool;
+
+        public StatusReporterService(Whirlpool whirlpool) {
+            this.whirlpool = whirlpool;
+        }
+
+        @Override
+        protected Task<Boolean> createTask() {
+            return new Task<>() {
+                protected Boolean call() throws Exception {
+                    if(whirlpool.mixingProperty().get()) {
+                        WhirlpoolWallet whirlpoolWallet = whirlpool.getWhirlpoolWallet();
+                        log.debug(whirlpool.walletId + ": " + whirlpoolWallet.getMixingState());
+                    } else {
+                        log.debug(whirlpool.walletId + ": Not mixing");
+                    }
+
+                    return true;
+                }
+            };
+        }
+    }
+
     public static class WalletUtxo {
         public final Wallet wallet;
         public final BlockTransactionHashIndex utxo;

src/main/java/com/sparrowwallet/sparrow/whirlpool/WhirlpoolServices.java

@@ -156,6 +156,7 @@ public class WhirlpoolServices {
         Whirlpool whirlpool = AppServices.getWhirlpoolServices().getWhirlpool(walletId);
         whirlpool.setScode(decryptedWallet.getMasterMixConfig().getScode());
         whirlpool.setHDWallet(walletId, decryptedWallet);
+        whirlpool.setResyncMixesDone(true);
 
         for(StandardAccount whirlpoolAccount : StandardAccount.WHIRLPOOL_ACCOUNTS) {
             if(decryptedWallet.getChildWallet(whirlpoolAccount) == null) {

src/main/java/com/sparrowwallet/sparrow/whirlpool/dataPersister/SparrowDataPersister.java

@@ -1,5 +1,6 @@
 package com.sparrowwallet.sparrow.whirlpool.dataPersister;
 
+import com.samourai.wallet.util.AbstractOrchestrator;
 import com.samourai.whirlpool.client.wallet.WhirlpoolWallet;
 import com.samourai.whirlpool.client.wallet.WhirlpoolWalletConfig;
 import com.samourai.whirlpool.client.wallet.data.dataPersister.DataPersister;
@@ -7,24 +8,49 @@ import com.samourai.whirlpool.client.wallet.data.utxoConfig.UtxoConfigPersistedS
 import com.samourai.whirlpool.client.wallet.data.utxoConfig.UtxoConfigSupplier;
 import com.samourai.whirlpool.client.wallet.data.walletState.WalletStateSupplier;
 import com.sparrowwallet.sparrow.whirlpool.dataSource.SparrowWalletStateSupplier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class SparrowDataPersister implements DataPersister {
+    private static final Logger log = LoggerFactory.getLogger(SparrowDataPersister.class);
+
     private final WalletStateSupplier walletStateSupplier;
     private final UtxoConfigSupplier utxoConfigSupplier;
 
-    public SparrowDataPersister(WhirlpoolWallet whirlpoolWallet) throws Exception {
+    private AbstractOrchestrator persistOrchestrator;
+    private final int persistDelaySeconds;
+
+    public SparrowDataPersister(WhirlpoolWallet whirlpoolWallet, int persistDelaySeconds) throws Exception {
         WhirlpoolWalletConfig config = whirlpoolWallet.getConfig();
         String walletIdentifier = whirlpoolWallet.getWalletIdentifier();
         this.walletStateSupplier = new SparrowWalletStateSupplier(walletIdentifier, config);
         this.utxoConfigSupplier = new UtxoConfigPersistedSupplier(new SparrowUtxoConfigPersister(walletIdentifier));
+        this.persistDelaySeconds = persistDelaySeconds;
     }
 
     @Override
     public void open() throws Exception {
+        startPersistOrchestrator();
+    }
+
+    protected void startPersistOrchestrator() {
+        persistOrchestrator = new AbstractOrchestrator(persistDelaySeconds * 1000) {
+            @Override
+            protected void runOrchestrator() {
+                try {
+                    persist(false);
+                } catch (Exception e) {
+                    log.error("Error persisting Whirlpool data", e);
+                }
+            }
+        };
+
+        persistOrchestrator.start(true);
     }
 
     @Override
     public void close() throws Exception {
+        persistOrchestrator.stop();
     }
 
     @Override

src/main/java/com/sparrowwallet/sparrow/whirlpool/dataPersister/SparrowUtxoConfigPersister.java

@@ -62,7 +62,9 @@ public class SparrowUtxoConfigPersister extends UtxoConfigPersister {
         wallet.getUtxoMixes().putAll(changedUtxoMixes);
         wallet.getUtxoMixes().keySet().removeAll(removedUtxoMixes.keySet());
 
-        EventManager.get().post(new WalletUtxoMixesChangedEvent(wallet, changedUtxoMixes, removedUtxoMixes));
+        if(!changedUtxoMixes.isEmpty() || !removedUtxoMixes.isEmpty()) {
+            EventManager.get().post(new WalletUtxoMixesChangedEvent(wallet, changedUtxoMixes, removedUtxoMixes));
+        }
     }
 
     private Wallet getWallet() {