SupportCompanion Full Screen strange behaviour

[MehdiYawari]

While setting the SupportCompanion to full screen, the edges of the screen turns black and the app is not really in full screen.
Then I have only the option to close/exit the app, which is then corrupt the whole desktop screen, meaning screen stays in black.
I think, it is enough to have the default screen size of the app as full screen (no full screen option). Or Full screen behavior must be fixed.

See the attached screenshots:
1: app in full screen
2: app closed but the screen stays black till support

[almenscorner]

I was able to replicate this behaviour, but, as the project is being migrated to Swift soon and this issue will no longer exist I will target this to be fixed with the 2.0.0 update currently in public preview.