[MC-268510] Items with "Unbreakable:1b" NBT can no longer have the unbreaking enchant applied

In previous versions, you could apply the unbreaking enchant to tools with the Unbreakable:1b NBT. This was very useful for custom durability tools in datapacks and maps which is no longer possible.

Since 24w03a and beyond the unbreaking enchantment is unable to be applied via anvil (in survival) or /enchant. I am reporting this as a bug as it was not listed in change notes and only happened around the time that the enchantment registry changed.

Linked issues

is duplicated by 1

MC-269264 Enchanting an enchanted weapon obtained by commands does not work Resolved

Comments 3

CreeperMagnet_ 2024-02-12T22:32:14Z

Can confirm.

oowooglac 2024-03-01T17:18:39Z

Confirmed in 24w09a. However, it's worth noting that you can still add the enchantment to it using an anvil in creative mode, so it isn't a significant issue.

VisiVersa 2024-03-04T00:24:36Z

The issue is easily negligible in 24w09a by disabling the damage component (instead of using the unbreakable flag), so I think this post should maybe be marked as "works as intended" now.