I'm finding it very annoying that you can't "drag" a window with the Play button toggled on. Resizes the MainHUD or whatever it may be, causing the displayed windows to black-out/disappear from view. Some kind of functionality has been changed/lost.
If play isn't turned on, it's too easy to click a specific element when trying to drag a window around, therefor incidentally moving the wrong thing!
Also wanted to point out my post (2nd to last) on the first page of this topic, in case it was missed.
