Managing sound and video settings during Teams meetings and calls for optimal communication
Just for the record, myself and other colleges that are using Team on Mac OS are also experiencing this exact problem as described and demonstrated by @Bebop17.
It appears to be an issue with the rendering of any video feed being presented in Teams. This issue seems to have manifested itself since the 12th of December 2022.
The issue does not appear when using the Teams web app on the same machine.