If the options for "Resolution Scale" are not set to Normal, Custom or Lowest Possible Scale, it will make textures disappear from the far left or far right edges of the screen.
I noticed disappearing textures from the far left and right edges when I changed from Quest 2 to Quest 3 HMD. Increasing the FOV in the menu fixed it for me.
If the options for "Resolution Scale" are not set to Normal, Custom or Lowest Possible Scale, it will make textures disappear from the far left or far right edges of the screen.