Custom banners patterns cause several bugs and crashes. (MC 1.20.5/1.20.6)

[david85258]

Stack trace

Forcing a timings report (Waiting 5 minutes cause the same result): https://paste.gg/p/anonymous/8fe00967c3d24d70b17da9c80831912a

Modify a BannerMeta of a Banner with a custom pattern: https://paste.gg/p/anonymous/bca4815e992041d698dbfcf0e5173bfb

Changing the slot of the banner with a custom pattern: https://paste.gg/p/anonymous/c2bdb4fa3a984863ac2750af121287f7

Plugin and Datapack List

Server Plugins (1): Bukkit Plugins:

• Test

There are 4 data pack(s) enabled: [vanilla (built-in)], [file/bukkit (world)], [paper (built-in)], [file/many-more-banners-v0.2.2.zip (world)]

Actions to reproduce (if known)

In All

Add a data pack that's add custom patterns (like this)

Timings

Give a banner with a custom pattern (from the data pack "/give @s minecraft:black_banner[minecraft:banner_patterns=[{pattern:'mmb:anchor',color:'red'}]]") Place the banner and wait to timings collect the data. (Can be forced cause using "/timings report") Video: https://youtu.be/DP30mUcqIzs?si=dt4w9vNn1aZT3Qxr

BannerMeta

Create a plugin that's modify the BannerMeta of a banner and modify the data of a banner with a custom pattern.

ItemMeta itemMeta = p.getInventory().getItemInMainHand().getItemMeta();
if (itemMeta instanceof BannerMeta bannerMeta){
    bannerMeta.addPattern(new Pattern(DyeColor.RED, PatternType.CREEPER));
    ItemStack item = p.getInventory().getItemInMainHand();
    item.setItemMeta(bannerMeta);
    p.getInventory().setItemInMainHand(item);
}

Video: https://youtu.be/k93NWKhxX8E?si=x2NJHBXrjSTJJe8x

Handle packet

Give a banner with a custom pattern (from the data pack "/give @s minecraft:black_banner[minecraft:banner_patterns=[{pattern:'mmb:anchor',color:'red'}]]") Move the item in the inventory. Video: https://www.youtube.com/watch?v=JO2bKsEw5FA

Paper version

version [13:49:34 INFO]: Checking version, please wait... [13:49:34 INFO]: This server is running Paper version git-Paper-53 (MC: 1.20.6) (Implementing API version 1.20.6-R0.1-SNAPSHOT) (Git: 5729b29) You are running the latest version

Other

No response