Not to argue, but I do think that this bug is urgent, and does require a special release just to fix it, without waiting for whatever else happens to be scheduled for 6.6.5
It can potentially result in lost data due to the cache drive filling up, containers crashing, notifications not being sent etc. Personally, I'm going to give this a day or two tops to be fixed, and then ultimately I'm going to have no choice but to downgrade back to 6.6.3, as I (and probably many users around here) are reliant upon notifications, scripts running on a schedule.