[GAMEPLAY] Using Playful/Trickster Regenerates Jungle Monster HP

Using Fizz's "E" ability, Playful / Trickster while fighting Jungle Monsters causes them to very rapidly regenerate health while Fizz is untargetable. Their health doesn't completely regenerate, but a significant portion of their health comes back. I'd guess its something with the Monster AI not being able to detect Fizz as attacking them while he is untargetable, so they refill their health as they would if they were being attacked but then the champion left before finishing them off.

1. Attack a group of jungle monsters so that they are missing some health (I noticed it most on blue buff and red buff).
2. Activate Playful / Trickster, the monster's health will have regenerated while Fizz was on his trident, healing probably about 1/8th (or maybe a little bit less) of its health.

I only noticed this happening in one game, I haven't had the chance to play another and try to reproduce the results yet. However, I doubt that it was caused by something situational, as this happened every time I tried to use Playful / Trickster to fight a Monster regardless of level, items, ect. that I had at the time.