Openfire + Active Directory - groups, does the setting itself turn off?

Question

Active Directory

Good afternoon!

I can't figure it out!

Installed Openfire, connected to Active Directory.
Everything seems to be ok, it works. Users are automatically added from ad.

I create groups. Everything seems to be ok.
But on one group there is some jamb.
I create it in Openfire , it shows up in the list.

And after some time it disappears, that is, it turns off the setting itself


. What could be the reason? How so?!)