Issue with rights page and children

hi, ive got issue with rights in my xwiki instance

We use keycloak as an ldap connector, we get users from zimbra mail servers and inject them into keycloak groups.

Next in xwiki we split these groups into dashboards and subwikis. Somehow we lost rights and children possibility. We can only add permisions for single pages and that will work, but if page has many childrens then setting permissions works only if i allow it by user. I can select proper permisions in rights and children but they do not propagate and work at all.

Any ideas?