I want to STAY in Full Screen when sharing ends

I know a lot of people hate full screen mode, and googling for information on Zoom and full screen are filled with people trying to figure out how to get out of full screen mode.

My problem is the opposite. I love full-screen mode. I'm on a Mac, and "full screen" goes onto its own space/desktop on my monitor that I can three-finger swipe to and from. Especially when screen-sharing, full screen mode allows me to see the shared screen as large as possible with minimum extra "chrome" around it.

I have Zoom set to "Enter full screen when starting or joining a meeting: checked" and "Window size when screen sharing: Fullscreen mode".

This used to work great. Zoom would start fullscreen, when someone shared it would stay full-screen, when someone stopped sharing it would stay full screen, etc. Sometime about a month back, all my Zoom settings got reset to defaults (no idea why), and even after setting the above two items again, what happens is:

• Start Zoom meeting: Full screen (correct)
• Someone shares screen: Full screen still (correct)
• Someone stops sharing their screen: Exits full screen and window ends up on some random desktop that I have to locate (very annoyingly incorrect)

How can I get that third behavior to stop? It disrupts whatever I am doing (be that paying strict attention to the meeting, or listening to the meeting while multitasking in the background on another screen).

Was this some intentional Zoom update, and I should make Zoom not full screen anymore?