I've noticed that some apps can be installed under both the Owner and Private Space environments, while others cannot. I've searched the web for a technical explanation but have yet to find one. Does anyone have a link that sheds some light on the subject?
For example, Obtainium and Material Files can be installed under both Owner and Private Space, however VLC and Mpv result in an error when attempting to install to both (in either direction). This occurs regardless of which app store is used (GPlay, F-Droid, or Obtainium). If I uninstall either media player from either side, I am able to install it to the other, but never simultaneously.