VR: Why does the animation work in the engine and not on Meta Quest?

I have the following problem: When I test the animation in the images in the engine with the Meta Quest, everything works as it should. As soon as I install the APK on the Meta Quest (3) and test it there, it doesn’t work or only after I open the “game” a second time.

The first time, the actor where the animation is played is in my position as soon as I press the trigger and then the whole animation is no longer correct. Or when I trigger the animation again, it sometimes happens that there is a small jerk or the actor is always moved forward briefly and then the animation continues smoothly.

In addition, some other things on the quest don’t work either (screen fading, “teleporting” players to a location, etc.), although when I test this in the engine with the VR glasses, it works as it should.

Does anyone know what the problem could be? Or am I making a mistake with the blueprints? Am I thinking too complicated?

Thank you very much for your help!