Vel'Koz Auto Attack Bug

I just finished playing a ranked game where I was against a Vel'Koz mid lane. After a few minutes of laning, I noticed how Vel'Koz would just freeze in place while auto attacking. I don't believe it was intended and my team's Trist said she also saw this a couple weeks back, but I think it's an animation bug. Talking about bugs, I also noticed at one point how Vel'Koz's tentacles just spread out in all three directions (left, top, and right) for a second until Vel'Koz began to move again. Not sure if it's just a few people experiencing this or what, but I was wondering if anyone else is seeing this or not.