Item stack tool tip fix

build.gradle

@@ -40,6 +40,10 @@ dependencies {
 	compileOnly("com.google.code.findbugs:annotations:3.0.1")
 }
 
+loom {
+	accessWidenerPath = file("src/main/resources/blanket-client-tweaks.accesswidener")
+}
+
 processResources {
 	inputs.property "version", project.version
 

src/main/java/io/github/blanketmc/blanket/Config.java

@@ -101,6 +101,14 @@ public final class Config {
     )
     public static boolean fixSwappedAmethystSound = true;
 
+    //by FX - PR0CESS
+    @ConfigEntry(
+            description = "Fixes Custom attribute modifiers that use the vanilla UUIDs don't display in tooltip properly",
+            issues = "MC-251252",
+            categories = BUGFIX
+    )
+    public static boolean itemStackTooltipUUIDFix = true;
+
     /*
 
     Entry Listeners

src/main/java/io/github/blanketmc/blanket/mixin/accessors/EntityAttributeModifierAccessor.java

@@ -0,0 +1,14 @@
+package io.github.blanketmc.blanket.mixin.accessors;
+
+import net.minecraft.entity.attribute.EntityAttributeModifier;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Mutable;
+import org.spongepowered.asm.mixin.gen.Accessor;
+
+import java.util.UUID;
+
+@Mixin(EntityAttributeModifier.class)
+public interface EntityAttributeModifierAccessor {
+    @Accessor("uuid") @Mutable
+    void setUuid(UUID id);
+}

src/main/java/io/github/blanketmc/blanket/mixin/fixes/ItemStack_tooltipMixin.java

@@ -0,0 +1,65 @@
+package io.github.blanketmc.blanket.mixin.fixes;
+
+import com.google.common.collect.Multimap;
+import io.github.blanketmc.blanket.Config;
+import io.github.blanketmc.blanket.mixin.accessors.EntityAttributeModifierAccessor;
+import net.minecraft.client.item.TooltipContext;
+import net.minecraft.entity.EquipmentSlot;
+import net.minecraft.entity.attribute.EntityAttribute;
+import net.minecraft.entity.attribute.EntityAttributeModifier;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemStack;
+import net.minecraft.text.MutableText;
+import net.minecraft.text.Text;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.Slice;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+import org.spongepowered.asm.mixin.injection.callback.LocalCapture;
+
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+
+@Mixin(ItemStack.class)
+public class ItemStack_tooltipMixin {
+
+
+    @Inject(
+            method = "getTooltip(Lnet/minecraft/entity/player/PlayerEntity;" +
+                    "Lnet/minecraft/client/item/TooltipContext;)Ljava/util/List;",
+            locals = LocalCapture.CAPTURE_FAILSOFT,
+            slice = @Slice(
+                    from = @At(
+                            value = "INVOKE",
+                            target = "Lnet/minecraft/item/ItemStack;getAttributeModifiers(" +
+                                    "Lnet/minecraft/entity/EquipmentSlot;)Lcom/google/common/collect/Multimap;",
+                            ordinal = 0,
+                            shift = At.Shift.AFTER
+                    ),
+                    to = @At(
+                            value = "INVOKE",
+                            target = "Lnet/minecraft/entity/attribute/EntityAttributeModifier;getOperation()" +
+                                    "Lnet/minecraft/entity/attribute/EntityAttributeModifier$Operation;",
+                            ordinal = 0,
+                            shift = At.Shift.BEFORE
+                    )
+            ),
+            at = @At(
+                    value = "INVOKE",
+                    target = "Lnet/minecraft/entity/attribute/EntityAttributeModifier;getId()Ljava/util/UUID;",
+                    ordinal = 0
+            )
+    )
+    private void getTooltip(PlayerEntity player, TooltipContext context, CallbackInfoReturnable<List<Text>> cir,
+                            List<Text> list, MutableText mutableText, int i, EquipmentSlot[] var6, int var7, int var8,
+                            EquipmentSlot equipmentSlot, Multimap<EntityAttribute, EntityAttributeModifier> multimap,
+                            Iterator<Map.Entry<EntityAttribute, EntityAttributeModifier>> var11,
+                            Map.Entry<EntityAttribute, EntityAttributeModifier> entry,
+                            EntityAttributeModifier entityAttributeModifier, double d, boolean bl) {
+        if (Config.itemStackTooltipUUIDFix && entityAttributeModifier.getId().equals(Item.ATTACK_DAMAGE_MODIFIER_ID))
+            ((EntityAttributeModifierAccessor)entityAttributeModifier).setUuid(Item.ATTACK_DAMAGE_MODIFIER_ID);
+    }
+}

src/main/resources/blanket-client-tweaks.accesswidener

@@ -0,0 +1,2 @@
+accessWidener	v1	named
+accessible field net/minecraft/item/Item ATTACK_DAMAGE_MODIFIER_ID Ljava/util/UUID;

src/main/resources/blanket-client-tweaks.mixins.json

@@ -4,18 +4,20 @@
   "package": "io.github.blanketmc.blanket.mixin",
   "compatibilityLevel": "JAVA_16",
   "client": [
+    "accessors.EntityAttributeModifierAccessor",
     "clientCommands.ClientPlayerEntity_clientCommandsMixin",
     "clientCommands.ClientPlayNetworkHandler_clientCommandsMixin",
+    "fixes.AmethystBlock_AmethystSoundFix",
     "fixes.EnderDragonEntityRenderer_crystalMixin",
     "fixes.Entity_clientDamageMixin",
     "fixes.Entity_lavaDamageMixin",
     "fixes.Entity_localIdMixin",
     "fixes.FireworkRocketEntity_particleMixin",
     "fixes.HandledScreen_mouseCloseMixin",
+    "fixes.ItemStack_tooltipMixin",
     "fixes.WolfEntity_tailSpinMixin",
     "fixes.YggdrasilUserApiService_syncBlockListMixin",
-    "performance.BiomeAccess_predictionMixin",
-    "fixes.AmethystBlock_AmethystSoundFix"
+    "performance.BiomeAccess_predictionMixin"
   ],
   "injectors": {
     "defaultRequire": 1

src/main/resources/fabric.mod.json

@@ -17,6 +17,8 @@
   "license": "MIT",
   "icon": "assets/blanket-client-tweaks/icon.png",
 
+  "accessWidener" : "blanket-client-tweaks.accesswidener",
+
   "environment": "client",
   "entrypoints": {
     "preLaunch": [