[Bug] Possible bug with respawn

[stage]

Happened to me couple of times, one on the lower levels and the last was on Level 12, BEFORE Activating the last boss. Simply the mobs kept on coming very quickly from different sides, no matter if I killed some of them or not. But when I restarted the game and loaded the save again, they never returned and nothing was spawning out of thin air - so I was able to clear level 12, go to lvl 13 find the parts return and activate the boss and so on.

[Spathi]

Does the spell have an effect backwards and sideways? I think self harm it is a good thing if it does, but I have forward spells only so far, so not sure.