RingCentral Meetings always launches in full screen mode. Is there a setting or configuration to force it to launch in windowed mode? My current workaround is to click "Exit Full Screen" on the screen share and press Esc on the attendee screen.
In the Windows RC Meetings app v6.3 if I open Settings and look in General, I see several options under Content Sharing including one for Entering full screen when starting or joining a meeting. This is likely what you need to toggle. Arguably this particular setting should logically belong under Application rather than Content Sharing.