I don’t know where to report a miner error, so her it is.
A Group item can select it self in Parent Groups, and then the Group item can not been seen in the Model
That’s not an error but a misconfiguration 
It should be clear that a parent Item can’t be its own child (and must not be its own descendant at all).
On the other hand, it’s ok for group items to be member of other group items, so you can’t simply disable group items as members. So, openHAB would have to check the whole tree every time you do edit a group membership, and only to ensure that the user doesn’t misconfigure the system.
Vaguely related
This topic was automatically closed 41 days after the last reply. New replies are no longer allowed.