Ditto.... same issue with new teams, random participants on group calls are black screens and changes if modify the screen size. It may be a memory issue but it's really not our job as users to determine what is wrong - it's impossible that this wasn't happening in testing by MS prior to release of this version it's just too consistent as an issue.
Can someone from MS at least acknowledge this is an issue? I mean sometimes I'm glad i don't see everyone, don't get me wrong, but when is someone from MS going to address and release update to correct? It's been ongoing ever since new release and i've tested shutting down any heavy consumption applications (MS Outlook/Chrome, etc.) and behaves the EXACT same. It's totally distracting from meeting when trying to readjust screen sizes and i've largely given up....
WHAT IS UP WITH TESTING - MS!!!!???? Also on lenovo yoga, large screen. It's hard to imagine delivering the new MS Teams with this type of performance - it's literally a virtual meeting platform that doesn't display meeting participants... i'd say missing a critical feature ;)