[GAMEPLAY] Weird Caitlyn bug.

I was playing in ranked. After I got to level 2 and leveled up my W, moments later I see enemy jungler ( ) on the map trapped, he was clearing the chickens. After checking the replay, he somehow got trapped in an invisible W of mine (I did not place the W, and I also started with Q.).

I do not know how it would be possible to reproduce the bug. This is my first time meeting with this bug.