That's the end of the tag after being reinserted and buried back in. The loop is clean when I finish it but after being fished/put under working loads it somehow pops back up and there's a bit of fuzz on the doubled section around it. Normally I'd say screw it and just fish it but I had an unexplained hollow failure a bit ago that has me doubting the integrity of my braid in instances.
I'm guessing this is either because I'm casting lures through small casting rod guides or from line twist. Redo it or just fish it?