Okay, not really a gripe, more a "was this how it was meant to happen in the chain of events?"
Playing Vayne bot, Hecarim ganks, I condemn him to the wall whilst he is mid charging in, however despite him being pushed back I am also knocked back as if his charge landed - and pushed into the opposing bot lane.
Possible bug? Does hecarim charge have a null zone where it cannot be stopped? Which is a bit problematic, that puts it on par with Vi ult, Malph ult, Galio after half charge ult etc. etc. note: ultimates have this, not normal abilities.