I just got around to upgrading to 1.2.3 from 1.0. A lot of my users miss how you can't double click a message to open it in a new window anymore. Additionally, the new behavior, putting the message into "move mode", is confusing them and they don't understand what it does. I think this is because there is no other email application that has similar behavior. It also means they can accidentally move a message into a random folder and it gets lost. They would prefer the old behavior.
It would be nice if there was at least a way to disable this in settings and revert to old behavior. I could not find a way to do this.
There was one other thread
about this nearly two years ago, but no responses. I am surprised because every user I have talked to so far do not like the new behavior.