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endermen, spiders and cave spiders eyes and sheep wool remain visible when invisibility potion has been thrown on them

"Jump Boost" does not reduce fall damage

Night Vision Potions that are edited to last longer create a potentially seizure-inducing flashing sky background.

Status effects are lost when returning to the overworld from the exit end portal

Infinite potion effects after dying

Poisoned Villager behaviour

Iron Golems are unaffected by Strength and Weakness potions

potion time stopped

When using the /effect command for Instant Healing (not sure if this is intended), players will glitch in lava and loose all their hunger

Haste 5 arm glitch

/effect Regen causes Lava to Damage Faster

Item Description is rendered behind Potion Effect Status in Inventory

/effect command for speed uses slowness and slowness use speed on amplifier 225

ALL Spawners with ActiveEffects crash the game, breaking hundreds of custom maps and servers.

Mob Spawners with potion effects on them crash the game

Health Boost Display Bug

Mining fatigue potion effect amplifier of over 127 does not work properly

Absorption effect applied by commands appears to be Absorption II

health boost

Health Boost and Absorption Effects have the same Icon

Health Boost and Regeneration hurts you over time

Saturation and Instant Health/Damage effects don't have an icon

Unintentional Weakness effect nerf.

Potion Effects causing graphical glitch in Inventory screen

Potions do not work on the enderdragon

Custom potion effect cures aren't saving

Sprinting Bug

Text of potion effect disappears/glitches out

Enchanted books glitch out potion effects