[Gameplay] Funny Little Zac Bug

I was charging my Elastic Slingshot as Zac and was aiming for some enemies on the other side of a wall, about from top side blue buff to the tier 2 top tower bush. When I let go of E(quick cast on) Zac went nowhere at all. Then when I started to move around, his walking animations got replaced with his 'flying through the air' animations for about 4 or 5 seconds and I was unable to using spells.

I can recreate it in a custom game but only by aiming slightly inside of a wall, but I swear in the match I wasn't aiming in a wall. Unfortunately I forgot to start my recording that game T.T .

After about a 30 mins of testing, I think I must have just clicked the wall by accident, I can not recreate it without aiming at the wall. It also seems you have to be right up against the wall(as shown in my 2nd clip).