Quick #flathub/#flatpak question regarding AppStream Metadata - what's the correct way to handle screenshots for apps that are inherently multi-window like Multiplex? In the long run I want to embed MPV, but that will be a while out still. I've tried to improve the old screenshots by green-screening the background and using the GNOME shadows, but I still can't pass the "resonable window size", "just the app window" etc. requirements ...
