Lately I have been getting infinite queues that I have to log out and log back in to fix. I play mostly tanks and healers and I am used to getting into a random normal queue either instantly or within a few minutes. I can constantly requeue as a tank for a random normal and not get any ready check even after waiting 15 minutes in queue, which is how I know it's bugged. When I log back in I get a ready check as soon as I requeue.

Sometimes when I have a partially made or fully put together group, queue doesn't work if either a tank or a healer has the crown. Passing crown to a DPS almost always works to fix it (and I know this because we get a ready check almost instantly). This bug has been present for months as far as I know.

Also, I was trying to fix this on my healer today and I logged out while queued because it wouldn't let me leave. When I logged back in I got a notification telling me that my queue for a veteran dungeon was ready, even though I wasn't even in a queue anymore. I accepted it and nothing happened.