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Bug Report
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Resolution: Won't Fix
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L3 - Default
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7.2.2
How to reproduce
- create user task in Camunda modeler
- add task listener (confirmed on "complete" event) with Java class implementation $TaskListener
- morph task type to service task, the task listener is no longer visible in the modeler UI properties view
- implement service for this task
- deploy process
When the engine execution completes the the service task, the engine tries to invoke the task listener and throws an ProcessEngineException
org.camunda.bpm.engine.ProcessEngineException: $TaskListener doesn't implement interface org.camunda.bpm.engine.delegate.ExecutionListener