I own the Quest since round about a week and while playing Beat Saber I got this issue 3 times. Suddenly the Quest's home room / screen appears (the room with your menu bar and screen in front of you where you start your games for example). The game didn't crashed. I can switch back and it starts within the song at the last position. I had this issue also one time at Beat Saber's menu where you select a song. Of course I'm 100% sure that I didn't pressed the home button on the right controller by accident. I don't think this is a tracking related thing because the Touch Controllers work fine.
I got that problem only with Beat Saber so far. Any ideas? Have someone spotted the same strange behavior?