I always have the task bar displayed, but Groupy seems to resize itself to full screen height (I have Groupy "windowed" - full height/left 2/3 of screen on a 2-monitor system. So Groupy extends to the bottom of the screen behind the taskbar. Not good.
Also, "Groupy 1" on monitor 1 seems to take on the size of "Group 2" on monitor 2, which I keep bigger horizontally. Come to think of it, since monitor 2 does not have a taskbar and is full screen height (but not full screen width), maybe Groupy 1 is mimicking that size H&V?
Each groups should be allowed to be there own size as needed.
