Hey look, it’s that bug that I posted on the bug report and normal forums over a year ago now, but got buried under D.Va megathreads and cosmetic bug posts!
https://us.battle.net/forums/en/overwatch/topic/20755776575
The irony is I’m fairly certain this became well known because of it’s appearance in a freshnuts video, the person in said video was actually shown the trick by me. I guess to get something fixed you just have to abuse it on video then have that video make it on a popular vodripper channel.