This changed, as in broke, around a week ago. At least for me, on Win 11.
Edit: Just remembered another Teams bug from a few days ago: cut text from the middle of paragraph, paste it back in earlier in the same paragraph, ... and it appears in a smaller font.
But yeah, it's really silly how they manage to break things like this. One would think they have a test-suite specifically for their shitty editor to prevent things like this - apparently not the case. Welp.
It's not yet skype-levels of bad, where doing _anything_ beyond simple text was impossible, but it seems they're slowly getting their, update by update.
My Android client randomly signs me out, sometimes multiple times per day.
This can be remidiated by using the editor mode, albeit I found it frustrating still.
Teams put a nobreak space or something in the code that looked like a ordinary space in the diff. I am still abit mad :)
Looks like all commercial chat-software is destined to become terrible garbage, one A/B-test at a time.
If I remember correctly, there is some difference between voice call chat rooms and the instant messaging chat rooms. I don't remember which messed up whitespace. Or if I copied between chats etc.
Can't trust the text anyhow.
And why there isn't the ability to just delete the rich text formatting and write markdown I do not know. They can't build a bug free rich text editor or one with intuitive controls. It's the same problem I have with Jira, the rich text editor just does not work like it should.