The bug
All sizes of chest and large chest, as well as barrels, ender chests and minecarts with chests, point to textures/gui/container/generic_54.png for drawing the inventory, making it impossible to texture them individually.
This is inconsistent with:
furnaces, blast furnaces and smokers, which all use different texture files despite appearing identical
shulker boxes, which have an identical looking inventory to single chests/trapped chests, ender chests, barrels and minecarts with chests, but are handled by a dedicated texture file
How to fix
Introduce new, dedicated files for each of these inventory types.
Linked issues
discovered while testing 1
is duplicated by 1
relates to 21
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Comments 7
Boats with chests and the two christmas variations of the chest/large chest also use the same texture (generic_54.png).
Another idea would be that different shulker box colors use their own texture file as well as the chipped and damaged anvil. This would allow resourcepack creators to apply a different ui texture based on the blockstate of the container.
Can confirm.