Within the commands, especially to create custom trades for custom Villagers, when adding in NBT data to items in the custom Villager’s trades, the naming is messed up. I put the NBT data for an item, attached to a trade of an item from the Villager, and everything else works, except for advanced naming, which worked well in versions such as 1.21.4; except for 1.21.8 or later.
Take into account, that the updates you did within the command’s engine / coding scheme, broke my custom Villager, and I really want you to switch it back; as well as stop updating it so often, as I keep having to recode my commands.
I use Command Generators; and the generators work well; I understand if you'd say, "well the generators must not be working," as I would think the same; except for a command that was working perfectly in 1.21.4, has messed up NBT data just from upgrading my version to 1.21.8.
You can recreate this bug, by creating a custom item, with a custom name - with colours and such - and input the NBT data of that item, into a custom Villager; through a command generator.
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