Additional features, settings, or issues not covered by specific Microsoft Teams categories
We are having the same issue on both Macs and PC's. Uninstalled new version. Cleared caches. Our default Teams Update policy was to run new version. Classic works fine, but when Microsoft controlled update kicks in, Classic on Mac stops having access to audio devices. New Teams simply shows a "connecting to meeting screen" with no access to any controls even though the user might be able to be seen and heard. Setting Teams Update policy to "Default to Classic" doesn't help. It appears it is the mere updating of new Teams that causes the issues. We also tried uninstalling Classic, clear all caches and installing only the new version, and that has same behavior. Some, but not all, PC users experiencing similar glitches. Only thing that fixed it for us was to change the Teams Update policy in the Admin center to Not Enabled, remove new version, and revert to classic.
Figure it out Microsoft. This new version is REALLY buggy. At the very least, you should revert the global default policy on teams installations away from "Microsoft controlled."