Void Illaoi Tentacle Hitboxes Not Displaying Properly

Hi, I played a top lane game against Illaoi using the Void skin earlier and for some reason I would say about every 5 tentacle slams or so, the slam would not show a hitbox which made it very hard for me to tell where it was going to hit. Not sure if it is only this skin causing it, but this is for sure the first time I've ever noticed it.