Comment by jimbokun
9 hours ago
I have a very mild jolt of anxiety every time I want to enter a new line in Teams or Slack, wondering if it will send a half completed message I will need to edit after the recipient has seen the half completed message, or it will enter a new line like I want it to.
The behavior also changes if you start editing a numbered or unordered list. Maybe that enters the "formatting tools" mode you mention?
If you're worried about this, consider a copy and paste from notepad.
Note the "very mild" jolt, not quite enough to rise to the level of switching to Notepad (or Emacs in my case).
Your advice beautifully reinforces OP's case. We now have to use auxiliary apps with more predictable behaviour because designers made such a mess of things.