I really wish Microsoft would stop gaslighting us about how great the NEW! Teams app is, and how it is so much better than the old version.
I have been using the new app heavily for the last few weeks, and it is so bug-ridden and feature-poor that I cannot use it. For example, the foundation of Microsoft Teams for Education as a LMS for teaching is the embedded OneNote Class Notebook. But the tab to access the class notebook has disappeared in the new version of Teams! Nobody in our IT department can figure out why, so they consider it a bug, but Microsoft doesn't consider it a bug! (Yeah, I know, it must be a feature, not a bug...).
There are so many other annoying and time-wasting bugs, I won't even try to list them. I would happily just use the old app (which I am trying to do), but each day when I open it, it tries to force me back to the new app, and there is no way to disable the message. Arggghh! Microsoft, you really, really dropped the ball, again.