[hateful]

I know this doesn't speak to your comment, and is also a bit of a rant, but I would clarify that "tabs" in this respect are not like "tabs" in your browser, where you can have multiple "things" open at the same time. As soon as you leave the teams tab, that application/file is closed.

So if you have an excel file open in teams (which can take up at least 10 seconds - which does speak to your comment!), and want to go back to a channel or chat, you're actually closing that file.

Granted you can open the Excel file not in teams, but this is just an example of how being locked in one window where the tabs aren't your open items, but rather possibly open items, is counter-productive.

That brings me to something else that I find strange, that with every new piece of Windows software over the last 10 years, it seems like Microsoft forgot that it's called "Windows" for a reason. The big deal about Windows was having multiple WINDOWS. And every time you take that away, you stray further from productivity. Don't even get me started on multi-monitor support over the years! /rant