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Like in the phone app move unread messages to the top of the list, so I can see them and they would not be hidden from me somewhere down in the contact list.
"Show Unread" toggle is not a solution, because if I read one, then that disappears, and if later I want to write/respond, I need to turn that off, find the conversation/group and respond, and then turn it back on.
Also if I need to copy some info from one chat to another I have the same issue.
Again that is a bad solution.
There is a toggle at the top of the Desktop app to prioritize unread messages.