In my experience the problems that Shadowstep had / still has: 1. When looking towards a spot where along that path there are two or more possible locations, it will unreliably switch between them based on small, uncontrollable changes....

Back when Gekko came out, I was testing his kit in competitive. Then my two remaining braincells activated one round, planning to use my ult to combo with another. I manned up and asked my Brim (because my region and elo hardly uses comms)...