[Gameplay] E Explosion does not apply Bork On-Hit Damage.
EDIT: I talk about Gangplank, just sayin'.
I know a Rioter already stated, it's intended that only physical damage on-hit effects proc on e explosion and magical ones like Wits End and Lichbane do not.
I built my standard build Trinity, Statikk Bork into Tank and it seemed like Bork's % damage doesn't proc as well, even though it is a physical damage on-hit effect. To be 100% sure I started a custom, bought only Bork and pulled some casters into the jungle to compare q damage / AA damage and q'd / AA'd keg damage.
At the moment I can't think of any reason why you would disregard bork. Therefore I assume it is a bug.
I know it is niche and probaly you do not care anyway, but it makes sense to keep it in line with the rest as stated and I'd really appreciate it, because like this it makes bork less attractive and just pressures GP into a certain path for Lifesteal / AS Items.