Given a process with an intermediate throwing signal event that is specified for async and have a custom job retry configuration.

<intermediateThrowEvent id="failingSignalEvent">
    <extensionElements>
      <camunda:failedJobRetryTimeCycle>R5/PT5M</camunda:failedJobRetryTimeCycle>
     </extensionElements>
    <signalEventDefinition signalRef="signal" camunda:async="true" />
</intermediateThrowEvent>

Problem:
When the signal is triggered and a failure occur during the transaction which follows the catch signal event then the custom retry configuration is not applied to the job and the default configuration is used.