Stop Teams rearranging windows

I am using Teams on my Mac to conduct an online training for software developers.

My main screen is shared in Teams and shows my PowerPoint slides in presentation mode. The teams meeting window itself has been moved to my second screen.

Now anytime when I switch between PowerPoint and some other tool (code editor, whatever) Teams rearranges the meeting window to some minimized version and into the bottom right corner of my MAIN screen where it covers parts of the editor.

Its extremely annoying having to click the diagonal arrow button in the Teams meeting windows to have it move back to its original position and size.

How can I stop Teams from repositioning the meeting window?