Infinite wait to be given an opponent in Quick Draft queue
This bug has happened a lot to me recently, I estimate that it has been present for more than a few months. It's hard to know that it is actually happening or if there is just a long wait for matchmaking to find a suitable opponent. However, I've had it happen enough times (and waited for long enough) to be abolutely certain that it is a repeatable bug.
I mostly play quick drafts but this may occur in other events or play modes.
It happens when you leave Arena running for more than about two hours without playing. Then you go to play a match and you are never given an opponent. I am currently sitting on a 31 minute timer. I know for sure that the queues are busy right now and that when I restart Arena and start a match, then I will be given an opponent within seconds.
Please fix this as it's very frustrating, especially if you haven't worked out that it is a bug yet.
EDIT: as predicted, I restart Arena and do not have to wait for an opponent, see second screenshot.