I’m so glad you posted this. This happens to me every queue; I move around a little and get rid of AFK every 5 minutes, and never get DCed while my time in queue is below 1 hour. As soon as an hour hits, boom, DCed. If I don’t get back soon enough, queue is dropped. If I do get back soon enough to remain in queue, it always shows 1 hour elapsed.
What the heck is with this 1 hr auto-DC while in AV queue? It is infuriating to keep missing queue and losing an hour of wait time just because I have to step away for 5 minutes near the end of the queue.