Abyss Unlimited Monsters Spawn

I encountered this bug today while i was maping.

Map was Tropical Island T16 with Gilded Abyss Scarab.

That was my last Stygian Spire for the Challenge and after getting the achievement the abyss never stoped spawning mobs .

I checked the mods did not give experience.

I tp's out in multiple times the abyss was there spawning mobs never to stop.

It did not spawn infinite number of mobs

This happened to me today too. Gilded Abyss Scarab and after the Spire died the pit just kept endlessly spawning monsters. Wasnt sure if this was intended or not, but I didnt think so.