Fizz auto attacking while stunned after landing from playful/trickster.

I was playing today as Veigar against Fizz and noticed two possible bugs.

First, when fizz would go up on his troll pole, I would drop my stun where he would land to attack me. He would then drop down, get an auto attack off on me and then immediately be stunned after (too bad I was already too dead to do anything about it). This happened multiple times; he would not move or be able to take any action, but he would still get an auto attack on me before being stunned after landing.

Second, as I understand Veigar's stun, it is supposed to stun any champion that dashes through it. Unfortunately for me, Fizz proved to be immune to this feature and would dash through my wall without consequence. Not once did he ever get stunned when dashing through the wall with his Q. This occurred repeatedly, to my ultimate death and frustration.