Setting the "subtypes" callback has no effect in-game, as the returned list of ItemStacks doesn't actually get added to the tab

[9thCore]

Minecraft Version

1.20.1

KubeJS Version

2001.6.5-build.14

Rhino Version

2001.2.2-build.18

Architectury Version

9.2.14

Forge/Fabric Version

Forge 47.3.1

Describe your issue

title

Repro:
1.

StartupEvents.registry("item", event => {
    event.create("kubejs:test")
    .subtypes(stack => {
        console.log("Running subtypes code...");
        const list = Utils.newList();
        list.add(stack.withNBT({test: 1}));
        return list
    })
})

2. Open creative inventory, KubeJS tab
3. Only one item of ID kubejs:test, with no NBT data
4. Optionally, also check JEI for the same outcome
5. Check logs, no line Running subtypes code... will be found

Crash report/logs

No response