Game doesn't save anywhere that a chest is a double chest

Can confirm except should be fixed by creating minecraft:double_chest. Surely?

Preferebly not, it's still a chest, as the block just changes in state, the only 3 block that do this is repeaters ((un)powered) and (flowing) water/lava.

and adding a new block would still require addition of above block states and facing, meaning it takes even more space.

Double chest has chest states including North,West,East and South but to fix it to not have chest states but have it's own states which is probably the best option for this would be to change double chest from chest side-option to double_chest

Block states are meant to show a different state of a block, a chest being connected is a state of the chest, as such it shouldn't be it's own block.

Please change summary to "Double chest isn't a separate block"

@unknown that'd make the ticket a feature request, changed the title regardless (and linked to a bigger splitting of ids ticket).