Game crashes when hovering over an item with unknown block tag(s) in the CanDestroy and CanPlaceOn NBT
The bug
If you've got an item with an unknown block tag in the CanDestroy or the CanPlaceOn NBT, the game crashes when hovering over the item.
How to reproduce
- Give yourself an item with either the CanDestroy or CanPlaceOn tag
/give @s minecraft:diamond_block{CanDestroy:["#minecraft:planks"]} - Disable the vanilla datapack (to make the #minecraft:planks tag unknown)
/datapack disable vanilla
- Hover over the diamond block item → the game will crash
Description: Rendering screen java.lang.NullPointerException: Rendering screen at aul.f(SourceFile:725) at aul.a(SourceFile:678) at cjn.a(SourceFile:99) at cjn.a(SourceFile:95) at ckr.a(SourceFile:680) at cki.b(SourceFile:177) at ckr.a(SourceFile:637) at ctg.a(SourceFile:821) at cfv.c(SourceFile:820) at cfv.a(SourceFile:381) at net.minecraft.client.main.Main.main(SourceFile:143)