I have been trying to reproduce this with more information to provide but unfortunately I haven’t had any luck either in having the issue occur on newly made projects so far. It was originally reproducing on the ThirdPersonBP Template.
I am however still able to reproduce it on my main project every single time. Which was based off the ThirdPersonBP Template from an earlier engine version and has been upgraded to 4.12. I’ve attempted to replicate different variables of my main project, which continues to have the issue occur, on newly made projects but it’s not occurring now. Things I’ve attempted to replicate on new projects:
- Objects in level
- Project Settings
- World Settings
- Objects in project
- Blueprints in project
Now with all that being said, replicating just the blueprints in a new project of ThirdPersonBP Template did create the extended packaging time of ~20 minutes. The UE4Editor.exe process did not remain running for an extended period of time though. I decided to copy just the ThirdPersonBP Content folder, which contains all my Animations, Blueprints, Character, Maps, and Meshes files (almost all of which are the normal default ThirdPersonBP Template files + StarterContent) and that did manage to reproduce the reported issue.