Closing the game in an unsaved world can cause items put in a container to be duplicated and items taken out of a container to be deleted.

Items get duplicated after game crash

Farmland next to water pushes the player towards the water

Shulkers do not drop experience upon death

Drowning is possible when standing in waterfalls and not fully underwater

Enchantment glint doesn't render on dropped items

End gateways will not generate after defeating the ender dragon