There’s no problem at all, maybe it was my image that created some confusion, so I’m sorry about that.
I’ve fixed the issue, and I’ve commented on the changeset: https://www.openstreetmap.org/changeset/124639289
Basically Hrodna had the wrong “parent”, it should have been Hrodna Region but it was Hrodna District.
Both are admin level 6, so that is correct, but “City part of District” was the incorrect part.
Thank you for the links and for the examples of more cities like Hrodna. That will be useful.