WTH why is back on open dialog closing the companion app

Month of "What the heck?!"
1

At least on android.

Say that I open the mot info dialog for an entity. When I press back on my phone, the dialog closes. As I should be.

But if I open a more info dialog for an entity, switch app and switch back to the companion app - where the more info dialog is still open, the same back command closes the app.

2

The back button is just like hitting back on the browser or the phone’s navigation menu.
The function does not state where back is and just accept what your device thinks is back.