Reported on Reddit:

Okay, so I've been having this really weird issue that has proved to be very consistent while fighting Shelldiver. The first two rounds of drilling go the way they are supposed to. But when it is downed the third time, the crystal bot seems to disappear and everyone gets locked wherever they were standing. Even new spawns to the arena get suck where they spawn in and the turrets pick them off endlessly. I can also still turn in place and shoot and use abilities as normal (though any that normally use movement, like Haraharrage, still keep me in place).

Trying to unstick everyone by teleporting to the crystal bot just results in a black screen and blank map. Using "Quit and return to Main Menu" then loading back in puts me back to the beginning of the fight, but the screen stays black. I need to close the game entirely and then load to be able to see the game. However, it still does the same thing again when it gets to the third round of drilling Shelldiver.

(While typing this out, the game eventually crashed and I did report the crash, assuming they actually get the reports...)

Is there any way to fix this in this run, or am I basically SoL until a later patch and should just end this run and do different paths/questlines for now?