Animations break when using sequencer

I have a level sequence where there are multiple actors playing animations. But when I was editing the level sequence in sequencer the animations started to keep breaking. It breaks as in the animations stops playing and the actor go back to their T pose. The level sequence still plays but it is only the actor in their t poses following the key frames. It has gotten fix if I would save the project sometimes or reload it. But only for a short amount of time until they break again