I had reported this problem maybe about a year ago when I was using Insider Previews of Windows 10. You back then refused to even look at it, because you wouldn't support beta versions of Windows.
The problem still remains: Grouped windows from one desktop are being pushed to other (virtual) desktops when you create a group, or an explorer window there.
How to reproduce:
- Have two virtual desktops (or more) configured.
- Set explorer windows to group automatically (optional) in Groupy settings.
- Create a group with two Explorer windows on one of the desktops. Let's call them here 'Music' and 'Video' for demonstration.
- Switch to the other desktop and create a new Explorer window, let's call it 'Documents' here.
- Attached will be one of the two Explorer windows from the first Desktop, grouped automatically. So 'Documents' will be grouped with 'Music', even though 'Music' belongs onto the first desktop with 'Video'.
This happens all the time. I guess most people don't use virtual desktops, even though it's baked into Windows, so not too many people report it.
For the record: Latest version of regular Windows 11 (no Insider), latest version of Groupy. Happened since a year or even longer on various versions of Groupy and Windows 10 and 11.