On macOS only, screen sharing in a Microsoft Teams call does nothing. I would expect the first screen to be shared at the point that the "Choose what to share" dialog pops up in Chrome, but screen sharing does not start at all.

Screensharing on pages like https://mozilla.github.io/webrtc-landing/gum_test.html seems to work fine on macOS, and screen sharing with Teams works fine on Linux as well.

Reported downstream here: https://github.com/qutebrowser/qutebrowser/issues/7320 - only tested in qutebrowser on macOS 10.14 as well as 12.4, but I don't see anything that would be specific to qutebrowser here. Unfortunately I need to take care of getting a newer Mac before I can test with e.g. simplebrowser easily...