Problem or bug Dashboards gestion in Dash Studio

Hi,
I have a  problem in my all dashboards gestion.
I can put a dashboard in a category and create a new category . But when i closing and open Simhub, my new category don't exist.

SimHub don't save in memory my changement.

Is there a limit of dashboards and categories in DashStudio ?

Is it a bug on this simhub V8.3.9 or an other problem ?

I didn't have this problem before.

Thanks for your reponses

Xavier

PS: Sorry for my poor English school (French)