Great, thanks Campell, also for your quick response.
Thanks @cimorrison. Yes, I am using the latests development code. I've tried that config setting (after rolling back configurations of filters and base ous). Now reports seems fine. Creating entries with administrator account still gives sizelimit exceeded.
I also found I was affected with bug #2048 https://sourceforge.net/p/mrbs/support-requests/2048/ As a workaround I've edited configuration, and added a ldap_filter ("objectCategory=person";) and created an array of base dn. Now I get no errors, nor in reports or editing entrys. When editing entry as an admin y only see users from one of the base ous.
I forgot: I have a very large directory.
Ldap sizelimit exceeded
Had same problem using mysql 8.0.25 and the update fixed it. Thanks