Totally a bug, seems to have to do with landing her web at the same time as an ender, but I’m not sure if that ender he did was breakable, usually if the ender doesn’t cash out it’s because the game thinks it’s opener ender. If it was breakable and the other guy didn’t break it because he thought it was a legit ender then there is nothing wrong with the tech. But if it’s unbreakable then yeah get rid of it.