Digging this one up again as ive not heard anything about it in ages. It still annoys me to this day. If i have interactive fullscreen and go to move the window, it automatically resizes itself and i have to wait around for it to do its thing. Unless you have 3 screens its a productivity nightmare the way it is currently to have max, SME and IR open at once. Please let us lock the size!
Its not really a feature request, more a behavioural change and these things tend to get buried.