Abyss totally bugged

How could it be that I got 3 abyss pits couldn´t be closed in only one map? In the right upper corner the game tells me there are 0 monsters on map left....


This is so stupid. I´m running abyss the whole time and in over the half of the maps this problem with not closed pits is existing. How should the people farm abyss?

This happens because map monsters are generated inside impassable objects.

The functions responsible for counting active monster in the map recognizes this and "deactivates" the monster, removing it from the count. However, the not so carefully crafted league mechanic doesn't get the memo.

Rarely, you can find one of these "stuck" monsters on certain maps, and if you're lucky kill it. Doing so will usually cause the Abyss to open.