Agreed! Unable to have multiple windows of the app bites.
Workaround... Open MS Teams in browser (https://teams.microsoft.com) and duplicate the tab. Can move the tab onto a separate
monitor. If have the app open too, will have three instances of MS Teams (i.e. one of the app; two in the browser).
Limitation... When opening more than two tabs, even if move the tab to a separate monitor, you do get an annoying notice that says, 'are you still there?', but you can click on 'I'm back' and it keeps
you where you were originally.
Cheers!
Unfortunately when you click "I'm back" if you were in a doc, you lose your place and have to find it again. I lose productivity when working on a doc that is 29 pages long. Trying to find where I was is time consuming.
For what it's worth, I use several browser tabs when working in Teams. I don't use the app on my laptop or mobile as it consumes so much memory and CPU that my laptop is essentially unusable and my phone becomes a hot brick.