Flashback Logs Not Deleted With PDB Drop

There is a known issue with Oracle where the flashback logs are not reclaimable when a PDB is dropped and a restore point exists in the PDB. I can see a restore point in x$kccrsp but no restore points exist in v$restore_point. I believe I am experiencing the aforementioned issue but the Oracle support web site is "experiencing an unscheduled outage" and I was wondering if anyone knows of a solution for removing the errant restore point.