Bug report - master yi - jungle

There is a bug I have encountered numerous times whilst jungling with Master yi, and the bug is sometimes when you alpha strike the jungle mob, yi reappears underneath the target allowing him to still kill the target, but the target sits idle and doesn't move. This bug could be seriously game breaking for people who yi jungle frequently as it would give them more sustain to continue jungle as there is a good chance the bug will occur 2/5 times resulting in an insanely fast clear time.