Seismic Shard Bug?

[quote=caucheka]ok so idk where i would post this but this seems the best to. [[seismic shard]] is bugged. was playing malphite today. i noticed that i was harassing alistar (as it was me and cho v solo alistar) and while his speed did decrease, mine did not increase at all. thinking it was just a simple "no longer buffs your speed but forgot to edit tooltip" i cast it on a minion and i gained the proper movespeed bonus, but only for like a second. later on enemy cho came up to the lane and i hit him with it, but it only buffed my ms by 5. wtf is going on?[/quote]