Sun Temple Abyss - unable to finish - no monsters

Hi, I am in map Sun Temple, and Abyss spawned near the sun in middle of triangle, and the mobs are missings, green-dotted lines are there.
Bug Report ID: #2556568104

Screenshot: https://drive.google.com/file/d/1qsgpPfa0lpEdlTpnGBF0F03CpoXrywt7/view?usp=sharing