If I have, for example, three windows of file explorer open and grouped together, and I open a new file explorer window in a different desktop (through task view), then one of the three joined windows (from the previous desktop) is un-grouped and joined with the new explorer window (on the new desktop).
If I ungroup the new window from the window that traveled through different virtual desktops, then the old window rejoins again the original group (where it should have stayed in the first place).
I believe this is a bug. Can anyone reproduce or is there a known solution already? I have the latest version of Groupy installed (1.44).