I use it daily on macOS, but on our dogfood release. I have my wishlist (though I focus on OSS so don't work on it). That said, my DMs are open for feedback / stuff that's broken!
I initially had issues as well, but it _would_ let me sign in, it just kept showing me the sign-in window every time I brought it into focus (with the regular window behind it). I launched it again to get a recording of this, but it's fixed now. Just thought it might be related and possibly helpful!
Last week it randomly changed my spell checker to Italian. Nothing else was in Italian, just its internal spell checker. So took me longer than I would’ve like to understand why half of the words I typed had squiggly red lines under them.
But at least when it worked, there was a funny bug where the call ringtone apparently somehow was picked up by the OS's media playback system. So I hit my keyboard's "play" button and instead of music, my Teams began to ring with apparently no incoming call. Took me ages to figure that one out. 🙃
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