teymon

Yes, this was a cache problem. I clear cache only for my site and all is OK now.

Thank you for help.

This is something very strange. I log in to the admin part of the site at home from my home PC – and all working fine.

I have the same OS WIN10 and same browser version Firefox 94.0.1 64 bit at work and at home.

And i know about empty categories – my categories is not empty.