I just turned off “display number of items in groups” as it seemed to be showing it for some groups and not others, and the count didn’t always match up with the number of items inside.
But, it still showing the number of items for some particular groups??
That is the count of unread items. Also explained in the manual 
Can you turn that off too (as I don’t use the “read/unread” marker).
Actually, I just marked them all as read so that solves the problem. But why these dots next to some of my databases?
Edit: it means unsync’d changes! 
