>>1016613lots of things can do that, do you haul aggressively? rushing the cast sometimes does that. do you hear snapping popping noises sometimes in back of you when you cast?
slow down your casting, take a pause in your backcast, literally squint and turn your head and watch your loop unfurl. when its out relatively straight youll feel the rod load and this is the time to sslowly accelerate your forward cast
Im guessing it may be due to your timing. slowing it all down, clearing your mind and focusing on the mechanics sometimes helps.