The gas fee field only get reset to default gas when you don't focus the field

src/components/FeesField/EthereumKind.js

@@ -15,14 +15,21 @@ type Props = {
 }
 
 class FeesField extends Component<Props & { fees?: Fees, error?: Error }, *> {
+  state = {
+    isFocused: false,
+  }
   componentDidUpdate() {
     const { gasPrice, fees, onChange } = this.props
-    if (!gasPrice && fees && fees.gas_price) {
+    const { isFocused } = this.state
+    if (!gasPrice && fees && fees.gas_price && !isFocused) {
       onChange(fees.gas_price) // we want to set the default to gas_price
     }
   }
+  onChangeFocus = isFocused => {
+    this.setState({ isFocused })
+  }
   render() {
-    const { account, gasPrice, onChange, error } = this.props
+    const { account, gasPrice, error, onChange } = this.props
     const { units } = account.currency
     return (
       <GenericContainer error={error} help="Gas">
@@ -32,6 +39,7 @@ class FeesField extends Component<Props & { fees?: Fees, error?: Error }, *> {
           containerProps={{ grow: true }}
           value={gasPrice}
           onChange={onChange}
+          onChangeFocus={this.onChangeFocus}
         />
       </GenericContainer>
     )

src/components/base/InputCurrency/index.js

@@ -45,6 +45,7 @@ function stopPropagation(e) {
 }
 
 type Props = {
+  onChangeFocus: boolean => void,
   onChange: (number, Unit) => void, // FIXME Unit shouldn't be provided (this is not "standard" onChange)
   onChangeUnit: Unit => void,
   renderRight: any,
@@ -61,6 +62,7 @@ type State = {
 
 class InputCurrency extends PureComponent<Props, State> {
   static defaultProps = {
+    onChangeFocus: noop,
     onChange: noop,
     renderRight: null,
     units: [],
@@ -122,8 +124,15 @@ class InputCurrency extends PureComponent<Props, State> {
     this.setState({ displayValue: v || '' })
   }
 
-  handleBlur = () => this.syncInput({ isFocused: false })
-  handleFocus = () => this.syncInput({ isFocused: true })
+  handleBlur = () => {
+    this.syncInput({ isFocused: false })
+    this.props.onChangeFocus(false)
+  }
+
+  handleFocus = () => {
+    this.syncInput({ isFocused: true })
+    this.props.onChangeFocus(true)
+  }
 
   syncInput = ({ isFocused }: { isFocused: boolean }) => {
     const { value, showAllDigits, unit } = this.props