1.9 is one of the most controversial updates in history, and it’s easy to see why - they changed the classic, simplistic combat system of Minecraft into a silly, convoluted system that destroyed PVP for a lot of servers without options to disable the features, and forced people to completely retune their experiences. It did add some great features, as most updates usually manage to do, like the Elytra and being able to restart the Dragon fight, but ultimately it meddles too much with the core Minecraft formula that still feels odd to me now when I play versions after this update.