Yeah, I looked up the post you've mentioned, but there the issue didn't resolve.
Firstly, I installed Groupy on fresh Windows 11 and had same issue like in the post, then I tried to tweak so it'll work. I found this workaround (disabled some packages to turn off the original windows tabs and changed ribbon through StartAllBack). So I guess you won't do anything with this, right?
I would recommend removing those mods.
We will only integrate if explorer has not been changed from Windows 22H2 level including OS tabs. No OS tabs, nothing to replace.