1 files changed, 4 insertions, 0 deletions
diff --git a/runtime/src/main/java/me/shedaniel/rei/impl/common/transfer/InputSlotCrafter.java b/runtime/src/main/java/me/shedaniel/rei/impl/common/transfer/InputSlotCrafter.java
index da15cbcef..86dfefca5 100644
--- a/runtime/src/main/java/me/shedaniel/rei/impl/common/transfer/InputSlotCrafter.java
+++ b/runtime/src/main/java/me/shedaniel/rei/impl/common/transfer/InputSlotCrafter.java
@@ -134,6 +134,10 @@ public abstract class InputSlotCrafter<T extends AbstractContainerMenu, C extend
             int finalCraftsAmount = amountToFill;
             
             for (ItemStack itemId : recipeItems) {
+                // Fix issue with empty item id (grid slot) [shift-click issue]
+                if (itemId == 0) {
+                    continue;
+                }
                 finalCraftsAmount = Math.min(finalCraftsAmount, itemId.getMaxStackSize());
             }