It wasn't waiting for the tx to be in the mempool
@ -1347,7 +1347,7 @@ def test_onchain_middleman(node_factory, bitcoind):
# l2 will drop to chain.
l2.daemon.wait_for_log('sendrawtx exit 0')
l1.bitcoin.generate_block(1)
l1.bitcoin.generate_block(1, wait_for_mempool=1)
l2.daemon.wait_for_log(' to ONCHAIN')
l1.daemon.wait_for_log(' to ONCHAIN')
l2.daemon.wait_for_log('OUR_UNILATERAL/THEIR_HTLC')