Hi, sorry I missed your comment until just now.
Yes the space at the top is meant to accommodate the plugins that add their own window to scenes up there, or the touch UI back button. I can look into adding that where it moves up if the touch UI is off, but it will probably need to be a toggle since there are some non-CGMZ plugins which add their own windows to that space as well, even for custom scenes like CGMZ scenes.