Blitzcrank and shaco
Just a few bugs I've noticed for a while. Not sure if they've been discussed yet.
Blitzcrank: If trying to pull a champion and they activate a shift (ex. Ezreal, kass) cancels the pull. If trying to pull thresh, but thresh activates the second part of his death sentence, both pulls are canceled/counter-acted.
Shaco: A shaco's box can detect an enemy shaco while he's invisible/deceived. The attack buff from deceive will sometime disappear if shaco cancels his initial attack.