The enchantments with the items in the saved hotbars introduced in 1.12 are gone. Also the colours on shields are off.
It's wrong on the dark image and right in the image in the sandstone world.
also it affects moving from 1.13 pre releases to 1.12.2, and NOW 1.12.2 to 1.12.2.
Linked issues
duplicates 1
Attachments
Comments 8

Where can I find it?

Which screenshot is which ? Can you please redo the screenshots with the debug screen (F3) enabled ?

That logfile is useless, it's the start of a 1.12.2 multiplayer session.
Need the logfile of the upgrade process of that 1.12.2 world when being loaded with 1.13-pre1
it happens across all worlds and didn't involve upgrading one.

Thanks:
[0605/170228:INFO:GameCallbacks.cpp(178)] game/net.minecraft.realms.RealmsBridge (Client thread) error Realms module missing
[0605/170239:INFO:GameCallbacks.cpp(178)] game/agf (Client thread) warn Unsupported key: wmatm.Plane in TaggedChoiceType[id, MinecartChest -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), ((Tag["Items", List[MuType[V501_3]]] | NilDrop), NilSave)),
SpectralArrow -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
EyeOfEnderSignal -> NilSave,
ItemFrame -> ((Tag["Item", MuType[V501_3]] | NilDrop), NilSave),
MinecartCommandBlock -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
Item -> ((Tag["Item", MuType[V501_3]] | NilDrop), NilSave),
EntityHorse -> ((Tag["Items", List[MuType[V501_3]]] | NilDrop), ((Tag["ArmorItem", MuType[V501_3]] | NilDrop), ((Tag["SaddleItem", MuType[V501_3]] | NilDrop), ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave))))),
Fireball -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
EnderDragon -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
MinecartTNT -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
Villager -> ((Tag["Inventory", List[MuType[V501_3]]] | NilDrop), ((Tag["Offers", ((Tag["Recipes", List[((Tag["buy", MuType[V501_3]] | NilDrop), ((Tag["buyB", MuType[V501_3]] | NilDrop), ((Tag["sell", MuType[V501_3]] | NilDrop), NilSave)))]] | NilDrop), NilSave)] | NilDrop), ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)))),
ThrownPotion -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), ((Tag["Potion", MuType[V501_3]] | NilDrop), NilSave)),
Guardian -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
SnowMan -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
LeashKnot -> NilSave,
Arrow -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
MushroomCow -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
LavaSlime -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Zombie -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
MinecartSpawner -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), MuType[V501_4]),
EnderCrystal -> NilSave,
Snowball -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
Enderman -> ((Tag["carried", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave))),
CaveSpider -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
MinecartHopper -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), ((Tag["Items", List[MuType[V501_3]]] | NilDrop), NilSave)),
XPOrb -> NilSave,
ThrownExpBottle -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
FireworksRocketEntity -> ((Tag["FireworksItem", MuType[V501_3]] | NilDrop), NilSave),
Chicken -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
FallingSand -> ((Tag["Block", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), ((Tag["TileEntityData", MuType[V501_0]] | NilDrop), NilSave)),
Giant -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
VillagerGolem -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
PrimedTnt -> NilSave,
Endermite -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Creeper -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Rabbit -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
ThrownEnderpearl -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
Silverfish -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
ShulkerBullet -> NilSave,
Shulker -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
ArmorStand -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Squid -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Skeleton -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
SmallFireball -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
MinecartRideable -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
Wolf -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Witch -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
PolarBear -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Ozelot -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
ThrownEgg -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
Cow -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Slime -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
AreaEffectCloud -> NilSave,
Painting -> NilSave,
Pig -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
MinecartFurnace -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
Bat -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Blaze -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
WitherBoss -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
PigZombie -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Spider -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Ghast -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
Sheep -> ((Tag["ArmorItems", List[MuType[V501_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V501_3]]] | NilDrop), NilSave)),
WitherSkull -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
Boat -> NilSave]
[0605/170239:INFO:GameCallbacks.cpp(178)] game/agf (Client thread) warn Unsupported key: wmatm.Plane in TaggedChoiceType[id, minecraft:spawner_minecart -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), MuType[V808_4]),
minecraft:giant -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:tnt -> NilSave,
minecraft:xp_orb -> NilSave,
minecraft:guardian -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:parrot -> NilSave,
minecraft:tnt_minecart -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:arrow -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:boat -> NilSave,
minecraft:chest_minecart -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), ((Tag["Items", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:wither -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:horse -> ((Tag["ArmorItem", MuType[V808_3]] | NilDrop), ((Tag["SaddleItem", MuType[V808_3]] | NilDrop), ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)))),
minecraft:ender_pearl -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:polar_bear -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:bat -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:eye_of_ender_signal -> NilSave,
minecraft:witch -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:wither_skeleton -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:fireball -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:fireworks_rocket -> ((Tag["FireworksItem", MuType[V808_3]] | NilDrop), NilSave),
minecraft:pig -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:llama -> NilSave,
minecraft:commandblock_minecart -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:furnace_minecart -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:llama_spit -> NilSave,
minecraft:husk -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:sheep -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:ender_dragon -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:xp_bottle -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:cave_spider -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:enderman -> ((Tag["carried", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave))),
minecraft:item_frame -> ((Tag["Item", MuType[V808_3]] | NilDrop), NilSave),
minecraft:evocation_illager -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:vindication_illager -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:snowman -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:vex -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:snowball -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:spectral_arrow -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:shulker_bullet -> NilSave,
minecraft:evocation_fangs -> NilSave,
minecraft:minecart -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:item -> ((Tag["Item", MuType[V808_3]] | NilDrop), NilSave),
minecraft:blaze -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:dragon_fireball -> NilSave,
minecraft:skeleton -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:elder_guardian -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:villager_golem -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:donkey -> ((Tag["Items", List[MuType[V808_3]]] | NilDrop), ((Tag["SaddleItem", MuType[V808_3]] | NilDrop), ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)))),
minecraft:zombie_pigman -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:area_effect_cloud -> NilSave,
minecraft:squid -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:ghast -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:mule -> ((Tag["Items", List[MuType[V808_3]]] | NilDrop), ((Tag["SaddleItem", MuType[V808_3]] | NilDrop), ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)))),
minecraft:skeleton_horse -> ((Tag["SaddleItem", MuType[V808_3]] | NilDrop), ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave))),
minecraft:armor_stand -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:egg -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:cow -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:zombie_horse -> ((Tag["SaddleItem", MuType[V808_3]] | NilDrop), ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave))),
minecraft:magma_cube -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:small_fireball -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:spider -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:creeper -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:illusion_illager -> NilSave,
minecraft:potion -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), ((Tag["Potion", MuType[V808_3]] | NilDrop), NilSave)),
minecraft:slime -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:leash_knot -> NilSave,
minecraft:wither_skull -> ((Tag["inTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), NilSave),
minecraft:ender_crystal -> NilSave,
minecraft:shulker -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:hopper_minecart -> ((Tag["DisplayTile", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), ((Tag["Items", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:mooshroom -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:villager -> ((Tag["Inventory", List[MuType[V808_3]]] | NilDrop), ((Tag["Offers", ((Tag["Recipes", List[((Tag["buy", MuType[V808_3]] | NilDrop), ((Tag["buyB", MuType[V808_3]] | NilDrop), ((Tag["sell", MuType[V808_3]] | NilDrop), NilSave)))]] | NilDrop), NilSave)] | NilDrop), ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)))),
minecraft:ocelot -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:silverfish -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:stray -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:endermite -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:chicken -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:falling_block -> ((Tag["Block", NamedType["block_name", (Int | NamespacedString)]] | NilDrop), ((Tag["TileEntityData", MuType[V808_0]] | NilDrop), NilSave)),
minecraft:zombie -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:wolf -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:zombie_villager -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:rabbit -> ((Tag["ArmorItems", List[MuType[V808_3]]] | NilDrop), ((Tag["HandItems", List[MuType[V808_3]]] | NilDrop), NilSave)),
minecraft:painting -> NilSave]

@unknown, downgrading is never supported, this will destroy worlds.
Please attach the launcher_log.txt of the upgrade process.