In my realm, I tried to add shaders and animated packs. In loading screen kinda weird to me like spam asking me to join download it. Then, It changed to purple and black checkers. I entered my world, it changed my buttons, health bar, chats, and etc. I never downloaded this pack, "H4 Shaders v14". This pack keep appearing random when I add shaders or mods. I tried to remove this pack, it is impossible to permanently delete forever.