1. share monitor to Teams 2. click on the little window to make it big again 3. reposition the video window back to where it was before
It's not clear to me the value of steps 2 and 3...
Yup, until you click away from that window, suddenly its the little window in the corner again and it is no longer available in Mission Control, well the little tiny window is.
So I end up clicking on that little window all the goddamn time just so I can see my co-workers and know who is talking.
I don't want it to minimize at all. And I surely don't want it to sit in the bottom right corner and if I move it, move back there.
Not sure why it's different for me and you, but I'm not shocked, the software is definitely a mess.
But I somehow don't have the particular problem you are having... anymore.
If a window is placed over top of the Teams window with all the floating faces, it minimizes itself into that small window...
Took me a while to figure this out, but, and if I understand what's going on and you didn't realize it you're going to smack yourself, but...
Try clicking on that tiny window with everyone's video feed on it. It gets bigger again into a full (and resizable) window with everyone's video feed, while the window you are sharing is still being shared (and outlined in red).
Apologies if I misunderstand or this doens't apply to you (I'm on MacOS), but it literally took me months of being frustrated with that situation before I realized clicking on the tiny window would restore it to a full window, so I figured that might be you too. I forget, maybe it requires a double-click.