I have a "Confluence Users Group" in Crowd with 10 users. I recently removed a user and added a new one.
However, the synchronised group in Confluence is showing 11 users. So we are exceeding the 10 user limit so cannot add new content (until this is resolved).
The old user is still present in Crowd. Even setting the user to not active. and shown in Confluence as (disabled), it makes not difference to the licence count.
(Confluence v6.3.4 and Crowd v3.0.1)
Mark