Flowable dynamic value in http task not working 6.8.0

@filiphr we are using Default ProcessEngineConfiguration
<serviceTask id=“sendmailrecipient” name=“assignment” flowable:parallelInSameTransaction=“true” flowable:type=“http”>. when we change this highlighted flag to false it is working in 6.8.0, if it is true then fails.

Do we need to provide any custom logic ?

Same issue mentioned here HTTP task execute parallel in same transaction not working in 6.8.0