The quest EQA - The Fissure - Inside the Stone Monster suffers badly from the second party doing it.
As none of the assets seem to respawn.
Neither the monsters, the boss or the loot respawns for the second party to take it.
The quest bubble for this quest is found in Exploration - The Fissure - Hidden Caves. (See the screenshot below)
(https://i.imgur.com/pUPhQxG.png)