[VR] Fade with ExponentialHeightFog using trigger box works in VR Preview, but not in packaged APK - 4.27

Hey!
I am working on a fairly simple VR level, in which the player “triggers” a fade to white effect. I used Exponential Height Fog with a timeline node in the Level Blueprint.
Now my issue is that when I hit “VR Play” the trigger box works and the fog appears, however when I package everything to a standalone app and install it to my Oculus Quest 2 - the fog doesn’t get triggered at all and walking through the trigger box does nothing.
I am not sure if it doesn’t render out or the blueprint doesn’t work in the standalone app. In any case it is very frustrating, because I see it working, just not in the final product.
Do you have any idea how to fix that issue?
Thank you very much for your help!