I don’t know when this started happening; possibly started happening in a recent update. Join a [MASTERED SLAYER] Heroes Battlegrounds - Roblox server on PS4, get hit by Hero Slayer’s Thousand Slashes move (or do anything, really), and you’ll encounter this in the microprofiler. It seems to happen most consistently with that specific move, but does happen at other random times as well.
I can’t really get a microprofiler dump because, well, it’s on PS4. If anyone knows how to get a dump from a PS4 console, I’d be appreciative.