Do you get disconnected from AFK/idling in town?

It also only seems to happen to me during peak hours when the server is under heavy load. Maybe they have something in place where it boots idle players when there is a queue, and at night time when there's no queue they allow you to remain AFK?

The only odd thing about this is I've never seen it mentioned by GGG, and they're pretty translucent with regards to their plans. So I think if this was intentional they would have told us.

as far as I know there is not any system in place to kick idlers.