Skeletar Mesh Disappears

I might have encountered a Bug.

Sadly, I have no Idea what it causes.

I have this Skeletar Mesh you are supposed to be in, It is basically a Tube, without collision that has flipped normals so you can see the walls when standing inside it.

The Problem is, somehow the Mesh seems to disappear when I move in some directions.
I am developing the scene for VR, so it didn’t really bother me, but when the player turns arround that also happens which I can’t ignore.

On the left side you can see the Mesh from the inside.
On the right side the Mesh disappears when I just sligtly move a bit forward.

This happens in playmode and in the Editor.

I just solved it myself.

I removed the Collision in the Physics asset and now it won’t glitch out anymore.