I have no idea what happened with robs GACS because I didn’t even play then but from what I can tell it was a much worse bug because it basically made golden suits unusable, the grim on the other hand could easily have had the jump as an intended feature and at the time wasn’t even the most broken feature of the suit (insta swing was). It’s trivially easy to take off even regular suits to avoid dying a jumping grim, i.e don’t stand in the middle of a district surrounded by 10 cops who want to rip you on 1.5k hp.