MASTER YI GAMEPLAY BUG

When attacking blue buff with Master Yi, the blue buff does not do the AA animations sometimes (depending on attack speed I think). It will just stand there twitching. This is annoying because you can cancel its AA by Q'ing it at the right time in its AA animation; in turn taking less damage in early clears. This has been happening to me since season 6 and still is not fixed. It also happens with red buff, but not as frequently. Master Yi needs all the help he can get now days!