Random Dungeon Cooldown despite finishing dungeon

Level 10, queueing random WoD dungeons. As soon as I start I have SavedInstances telling me there’s a Random Dungeon Cooldown of 15 minutes. It takes ~10 minutes to clear the dungeon. This should clear the time but it doesn’t.

If all 5 queue we should instant queue if it wasn’t there but we don’t. There is a wait matching the CD. Typically the RDF status will show 2/3 DPS, 1 Tank, 1 Healer and stay there until the CD times out.

This CD doesn’t show on the RDF but it’s still very much there.

I assume this is a bug and from Googling, this has been the case for some time.