Event Trigger Callbacks not fired in Packaged Build.

Development Programming & Scripting
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Event Trigger Callbacks not fired in Packaged Build.

I’m facing an issue in which event triggers added via C++ code is not fired in packaged build.
Upon investigating UE Engine source I could figure that the function GameThread_EventTriggerPhase in MovieSceneEntitySystemRunner.cpp is never called.

Detailed source code used to create and play the level sequence can be found here

Any help is much appreciated.