Make a cinematic (LevelSequencer).
Test it via playing the game.
Now if you try to pause the game to look at some problems, observe that the game does pauses, but the cinematics animation keep on playing like nothing happened.
Not the most helpfull thing when trying to debug something.
If you upgrade your project to 4.15 at any point, try switching back to “Create Sequence Player”. We refactored the way that it works and it should fix most of these types of problems.