I bought groupy yesterday and then requested a refund because I got Groupy not working.
When I minimized (back to taskbar and also happening with resizes) a maximized window with tabs (multiple windows of firefox, or chrome, or edge, I tried all three) and then wanted to open it again and/or go through the groupy-tabs, I got really breakable glitches.
The whole groupy-window would appear/disappear, windows are not correctly displaying etc.
Tried it on my laptop and also on a sandbox on my laptop. Thought the programm is completly broken.
But today I discovered I dont have these bugs when "Show only active window" is selected, but with "Show only one combined button" and "Show all" this bugs appear. Both on my sandbox and also on my laptop.
Please fix this! I think its not hard to replicate the bug, just play around with Maximized Browsers (or possibly also other programms) when one of the 2 settings is activated. E.g. Win+D reliably gets you these glitches.
I also saw 1-2 mentions elsewhere in some other threads of this bug e.g. here:
https://forums.stardock.com/524974/groupy-2-bugs
Edit: I am using Windows 11 fully updated... As I said it also happens in the Windows Sandbox so additional installed programms are not needed for the bug to appear, I think.