One of my players noted that a repeating field in a custom character sheet I made from the available AD&D 2E sheet will have it's class/level/exp field removed if you are entering information and hit return/enter. We did not test any other fields as one was enough for us to not use the pop outs for now. Return/enter is not required, he did it out of habit and poof - gone. I did some recreations myself and it only happens when it is in the popped out mode.