Bug: Categorie setting don't get saved

I’ve added custom categories with custom colors, unpinned the categories pinned by default and pinned my custom categories. Theses settings only work for the current session. Wen I logoff and login again my custom categories settings are gone and the default categories are pinned again.

Versions?

WebApp: 3.4.5.1202+47.1
Kopano Core: 8.5.1
Z-Push: 2.3.9+0-0

We are currently investigating an issue in Kopano Groupware Core related to categories that go missing after logout/login. Keep an eye on https://jira.kopano.io/browse/KC-1045.