Not sure if it is just me, but I find it incredibly annoying when the app closes if another window opens on top of it without saving any changes I have made on the app.
I am working on 2 screens and sometimes when I open a new window/application it opens on the screen where I have the PowerApps Studio open causing it to close without saving. It already happened numerous times to lose my changes because of this (wasted time...).
I assume this is the standard behaviour of the modern windows apps, however it would be nice to have a feature/setting to auto-save or to be warned that the app will close and to give you the choice to save or not.