Delayer with JdbcMessageStore does not release messages

[sbaby83]

Since 6.1.3 and the commit 032df62

The message is not released by delayer and this text appears in logs :

"No message in the Message Store to release: " + message +
". Likely another instance has already released it."

To Reproduce

IntegrationFlow
.from("firstTryChannel")
.delay(
"firstTry",
d -> d.defaultDelay(firstTryDelay)
.transactionalRelease(transactionInterceptorAdvice)
.maxAttempts(1)
.messageStore(jdbcMessageStore)
.delayedMessageErrorChannel("secondTryChannel")
)
.channel(FLOW_INPUT_CHANNEL)
.get();

Expected behavior

The message is released by delayer.

[artembilan]

Confirmed.
We have a logic in the DelayHandler like return ((MessageStore) this.messageStore).removeMessage(message.getHeaders().getId()) != null; where it fails now because we check if message is not in any group any more.

Unfortunately our DelayerHandlerRescheduleIntegrationTests is marked as @LongRunningTest and it is missed from any test suites 😢