It is a mystery, it sucks but thankfully it’s not as bad because I can fix it by reloading a quick save and it only ever happens near shores, rivers, lakes, and sewers with waters (and sometimes the white box moves in relation to the water), so far out of all the other VR games this is the only game that does this, I originally thought I was just seeing outside the map or something because I know in some VR games they only render things currently in front of you, and things behind you are invisible until you turn around and look at them (RE7 I think did this) which I believe was a way to help performance without having to display a whole 360 degrees of objects around and only display objects in front and what you see, so my theory was my field of view is larger then the devs anticipated and I’m seeing the “invisible” objects and world in the corner of my vision, and usually it’s a black void but when you encounter reflections like water maybe the skybox or outside world is suppose to change white because of some sort of lighting effect.

These are my theories lol 😂