Matchmaker stop making matches when group quotas are on
CMS and OSG report that after upgrading their CMs to 8.9.9, the negotiator works fine for a while, then stops making matches. After investigation, when a job completes, the matchmaker is only decrementing the usage of submitters, not groups. This is a bug introduced in 8.9.9 with the hierarchical history code.
Note the commit for this was accidentally tagged