I queue as all roles on druid, paladin and monk and have had the queue do nothing for 5-10 minutes… then leave, re-join, and suddenly instant queue pops up in a different role! (Both tank cta where it’s assigned me tank then nothing and healer cta it’s assigned me healer and nothing, but leave and instantly get the reverse role).
It’s a programming issue that’s not being worked on I believe, as they probably can’t work out how to funnel people in to the group prior to role selection.