This has no bug.
Note: Minify the command to avoid issues :)
Bence6's Ultimate pants
Herobrine Helmet
Bence6's Herobrine Chestplate
Bence6's Super Enchanted Diamond Boots
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)