It is BS, but when I tried that, I had other things not working, like sharing my screen. So it is BS, but not merely for looking at the user agent of the browse

It is BS, but when I tried that, I had other things not working, like sharing my screen. So it is BS, but not merely for looking at the user agent of the browser, but for the software development incapability or unwillingness on the side of MS. (Edit: While basically every other voice chat / video chat web app works fine on FF, so basically everyone but MS and Slack has solved this problem years ago. Go figure.)