Fix #1622

Author: IThundxr

src/main/java/com/simibubi/create/compat/rei/category/ItemDrainCategory.java

@@ -28,7 +28,6 @@
 import me.shedaniel.rei.api.common.entry.EntryStack;
 import me.shedaniel.rei.api.common.entry.type.VanillaEntryTypes;
 import me.shedaniel.rei.api.common.util.EntryIngredients;
-import net.fabricmc.fabric.api.transfer.v1.context.ContainerItemContext;
 import net.fabricmc.fabric.api.transfer.v1.fluid.FluidConstants;
 import net.fabricmc.fabric.api.transfer.v1.fluid.FluidStorage;
 import net.fabricmc.fabric.api.transfer.v1.fluid.FluidVariant;
@@ -75,7 +74,8 @@ public static void consumeRecipes(Consumer<EmptyingRecipe> consumer) {
 			if (handler == null)
 				return;
 			FluidStack extracted = TransferUtil.extractAnyFluid(handler, FluidConstants.BUCKET);
-			ItemStack result = ctx.getItemVariant().toStack(ItemHelper.truncateLong(ctx.getAmount()));
+			int amount = ctx.getItemVariant().isBlank() ? 0 : (int) ctx.getAmount(); // GH#1622
+			ItemStack result = ctx.getItemVariant().toStack(ItemHelper.truncateLong(amount));
 			if (extracted.isEmpty())
 				return;
 			if (result.isEmpty())

src/main/java/com/simibubi/create/content/fluids/transfer/GenericItemEmptying.java

@@ -18,7 +18,6 @@
 import net.fabricmc.fabric.api.transfer.v1.transaction.Transaction;
 import net.minecraft.world.Container;
 import net.minecraft.world.item.ItemStack;
-import net.minecraft.world.item.PotionItem;
 import net.minecraft.world.item.crafting.Recipe;
 import net.minecraft.world.level.Level;
 
@@ -65,7 +64,8 @@ public static Pair<FluidStack, ItemStack> emptyItem(Level world, ItemStack stack
 			return Pair.of(resultingFluid, resultingItem);
 		try (Transaction t = TransferUtil.getTransaction()) {
 			resultingFluid = TransferUtil.extractAnyFluid(tank, FluidConstants.BUCKET);
-			resultingItem = ctx.getItemVariant().toStack((int) ctx.getAmount());
+			int amount = ctx.getItemVariant().isBlank() ? 0 : (int) ctx.getAmount(); // GH#1622
+			resultingItem = ctx.getItemVariant().toStack(amount);
 			if (!simulate) {
 				stack.shrink(1);
 				t.commit();