This is the first time this has happened to me, but I’ve heard other people talking about it happening to them.
If you get disconnected during a dungeon, it kicks you out of the dungeon. This means you lose one of your dungeon runs for that day. The dungeon limit doesn’t bother me, but this part does. You really need to fix this. Please IMC. It is really frustrating when this happens.
My suggestion is that if you get disconnected during a dungeon, you can log back inside the dungeon. This way your dungeon runs don’t get wasted.