The bug
In some cases items lose their data after they have been used in the world, e.g. by interacting with entities, see the lists below.
Possible without changes
The game already has the functionality (e.g. NBT tags) required to solve these, but is not using it.
Buckets turning into other types of buckets, by player or dispenser - Consider the implications on adventure mode and re-using buckets (MC-48252)
Bowls filled from red and brown mooshrooms
Glass bottles being filled
Potions/water bottles and bowls after being consumed
Potions/water bottles after being brewed
Item given to panda by right clicking it
MC-114461: Lava bucket emptied / water bucket filled in furnace
MC-191591: Saddling horse
Requires changes
Changes (e.g. addition of NBT tags) are required to support these cases.
Linked issues
is duplicated by 12
MC-272840
Items that change into other Items do not keep Enchantments
Resolved
MC-228690
Renamed buckets will be unnamed when placed down
Resolved
MC-173098
renamed bucket loses it's name after using it
Resolved
MC-169359
Water bucket's custom name disappears after using it
Resolved
MC-2194
Anvil naming system - Buckets not keeping their names
Resolved
relates to 2
Attachments
Comments 28
That someone was me. See the /r/Mojira discussion linked in MC-1981.
in fact, the bucket also looses all other nbt (CanPlaceOn for example), same with bottles/potions, don't know about bowls
This is a dupe of MC-1981. Someone changed the title to make it misleading. Its not just arrows.