The directory rebuilds upon startup, note there are also image directories and other that may also require refreshing. As I noted, the fix I posted also resolves an issue with Video not working correctly in Meet Now meetings in Teams as well. The deletion of the entire contents of the %userdata%\roaming\microsoft\teams directory was also recommended by a Microsoft Teams CE.
Thanks, Alan. I should have said "renaming the folder" (better than deleting) and, you're right, I experienced no real issues after doing so, other than I had to go into Settings and turn dark mode back on. But I now have the new meeting experience, including breakout rooms! 🙌🏻
We were also experiencing a Teams video issue, where you couldn't see anyone else's video if Teams was maximized. Had a ticket open with Microsoft, which did not provide a solution, but one day it just started working again. No changes on our side (and we do not use Citrix nor have that folder).
The wonderful, magical, world of Microsoft. ✨