Groupy2 is amazing, ALMOST perfect.
The one constant annoyance I have with it, is that when I have a non-groupy window, placed just where I want it, and I "add" another window as a groupy tab... the groupy tab ends up taking up space above the original window placement, which often goes off my screen.
I would like it better if, when a groupy tab is added to a window for the first time (by dropping another window on it), the full-footprint of the new window+groupy tab was the same as the original window without the groupy tab.
Here is a video to demonstrate the problem:
https://youtu.be/ykmlk0m-FkE