Twitch's Q invisibility bouncing off Trundle's pillars? Blocked path?

I've noticed this as of lately, but whenever I use Twitch's Q and stealth whenever Trundle summons his pillar - Twitch momentarily is unable to go through the area that the pillar is spawned even after the pillar is gone while invisible. For some reason, Twitch just isn't able to go through that route when he's invisible within the area that Trundle's pillar has been spawned upon.

The main issue is that Twitch is still unable to go through the pathway after the pillar has descended back into the ground. While stealthed, Twitch instead just goes around the path as if there still remains an invisible wall/pillar in front of him.

Perhaps it is my own gameplay errors; however, I feel that Twitch's invisibility completely goes weird in a sense that he is very difficult to control when stealthed after Trundle summons a pillar right in front of him. I was wondering if this was just my own experience or if others have experienced this same issue as well.

Thank you.