[SOGo] Contacts Categoris shows [object Object]

[ce...@celiorod.eu]

Hello, all,
I have an issue with my sogo installation.
When editing a contact, i select the categories dropdown, and select one of the 
available ones, but on the form field it shows “[object Object]”, and pressing 
save the field remains empty.
My SOGo version is 5.12.10 and may language is pt_PT.
thank you,
CR