BUG: 1.745.524.539 - Simulacrum not working

I tried doing a Simulacrum but the first wave never finsihed.
Mobs stopped spawning, I checked the whole zone 12 times. I tried portaling out and in again, but it didn't work. I tried loggin off and back on, same problem. Stuck at the end of wave 1(one).

I guessed it was a just very unlucky, so I purchased another one and it happened again on the 2nd simuluacrum, stuck at the end of wave 1. I won't be trying it again until I hear some answers.

First simulacrum: ATC 1 town
Second: ACT 3 town


By the way, I did 3~4 Simulacrums yesterday and they were all fine but they were all in ATC 10 town.

I'm playing a holy relic build with an AG and Specters. I don't know if that info is helpful or not.