[EDIT] Why do the US have a bug report section, and the f…ing EU not?
Moving it to the US, probably not a single Blizzard employee ever comes to EU forum…
Nightmare Dungeon: Conclave (Tier 6) Level 56
Area i teleported to town from: Infested Laboratory
Affixes: Thorn (benefit), Volcanic, Monster Burning Damage.
Class: Sorcerer, level 56
Teleported back to town to sell items, when i entered the dungeon from the portal, i was at the start, dungeon reset.
[EDIT] I did try after completing the dungeon to go back, the dungeon reset again, but as a normal dungeon World Tier 3.
This time i killed only a few mobs, portet back to town and back again, but the dungeon did NOT reset this time.