Settings also work just fine, if you always switch to VR mode BEFORE clicking settings icon . This is required only once during a gaming session, and after that you can switch between VR and 2D modes and enter settings page like you want.
If you go to settings page before switching to VR at least once, settings will be messed. I have set config file to read-only mode to prevent accidentally doing that and reseting my settings permanently. Ofc I also have backup of cfg file.