Zochama, High priest is bugged in temple of vaal

For the second time, I encountered Zochama in my temple. The boss jumps into the ground, leaving a cracking effect that deals damage. However, it never resurfaces. As a result, the player becomes permanently stuck in the room — this time in the Golden Forge room.

Every time I return, the boss remains underground and never comes back to the surface, leaving me stuck in the room again.

yeah i had the same thing happen to me, i noticed that i stunned him at a similar time when he dove under ground so that may be the cause of it, to leave the temple you could just town portal out the room and renter the temple because it will take you to the temple entrance instead of your portal

After a few attempts, logging out to the character selection screen and logging back in, immediately rolling toward the door, I eventually managed to bypass the locked door. I am not sure if this behavior was a one-time thing.