Hi!
With the latest Beta build of Microsoft Remote Desktop Beta for Mac (10.7.1 1942), the Mac version of Teams (1.4.00.22368) lost the ability to share the RDP session. This works correctly with the release build of Remote Desktop (10.7.0 1933). I am using Dual Monitors, each one 4k, and I go to share one of the monitors in Teams, and the screen shows as black, rather than the RDP session.