Page Titles are not delimited for users

I have a strange situation about delimiting Page Titles in Behaviour.
As a first superadmin when i try to browse these Page titles, it is grouping fine e.g. - with expandable + signs, which expand.
Other users can’t see this + sign and all info is not grouped.

I’ve tried to modify
in global and config files - no luck.
users which cannot see grouped date tried from different browsers, tried from my browser - no luck.

I thought that there are some User specific settings - but no, didn’t find them.
Tried to recreate user also - no luck.

version is 4.3.1.