PoE2 0.5 Limestone Hideout doesn't have any monsters to clear

I found a Limestone Hideout on my Atlas, but when I enter it, it immediately says "0 monsters remaining". The objective still tells me to clear all monsters in the hideout, but there are no monsters to kill.

I've tried opening a new instance, running another map and finding it again, restarting the game completely, and even logging out while inside the hideout, but nothing seems to fix the issue.

I seem to have the same problem, I've also tried:
Going in and out of said map/hideout.
Restarted with the map with a new "key".
Done other maps and come back.
Restarted the game.

Can confirm the same issue. Limestone Hideout requires killing all monsters but no monsters to kill.