I was playing on Procedural Factory this morning and had about 4 or 5 spawns already. I had my crystal advanced to the first available slot. I opened a new door, but as soon as I did I got a wave warning so I fell back to defend. After clearing the waves, apparently there was a new spawn point in the further room that I had just opened. The enemies did not stop spawning from this new room after the other spawn points did stop. I pushed my way forward to the spawn room and they just continued to spawn until a new wave came. I fell back, defended again and after this wave is when the infinite wave finally stopped. Im not sure if this is an intended mechanic as I never explored the room that contained the spawner. It was still a "?" on the map. I'm not sure how to recreate this. The nest was continuously spawned was a bug nest (I forget the name of the enemies). I don't have any screenshots. I can provide any local files if you think they're relevant, just let me know.