Had a run at the achievement ruined by this bug. We killed the 3 smaller holograms, the big ultraviolet hologram appeared, and then without any kind of warning, a scorchmark just appeared underneath me and I took damage from it. There wasn’t even a laser shot, since I would have been hit by it had there been one.
My guess, there is some carry over interaction from when the Prime Hologram splits up. Like it is preparing a shot or fires it, but then splits up into the 3 smaller ones before the scorchmark triggers (or it “saves” the scorchmark). Then after it reforms into the Ultraviolet Hologram, it generates the scorchmark, long after anyone can reasonably remember where the original laser was fired.