Add "Pop out chat" as a right-click option on the Chat icon in the left icon panel
I find the pop-out chat icon in the upper right to be pretty opaque --- when I'm looking for that functionality, I go to the Chat icon in the left-panel, and right-click. No "Pop-out chat" there. "Hmm, I guess that functionality doesn't exist. How am I getting chat popups on my screen during a meeting, then? I wonder how to reply to them"