Introduction

Piglins, after killing a targeted mob, will have their weapons and crossbows disappear for a moment. This is best described as seeing a Piglin with a sword killing a wither skeleton or a hoglin. After the Piglin holding the sword kills that wither skeleton or hoglin, their sword will vanish from their two arms for a bit before rendering again.

How to Reproduce

Build a fence or a wall to restrict the Piglins' movement. Then spawn a bunch of Piglins in that fence and squeeze 1 hoglin into the fence where the Piglins are. Pay close attention to what weapon each Piglin is holding. Wait for the Piglins to attack the hoglin and if the Piglins succeed, look at each of the piglins' arms carefully and you should notice that their weapons don't appear on their bodies for a minute before reappearing.

Extra Note

I would love to send a screenshot of the bug but I own Minecraft Bedrock on an Xbox One. So it may be hard for me to send you a picture of the bug. At least try it yourself and if you do notice the bug in action let me know in the comments.

The reason why I mentioned hoglins in the How to Reproduce section is because this bug manifests best with hoglins. I've seen wither skeletons sometimes cause this bug to happen but not always.