Cherry pick fix for #2608 in mc1.16

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Refined Storage Changelog
 
+### 1.8.8
+- Fixed duplication bug and weird behavior in the Crafting Grid matrix (Darkere)
+
 ### 1.8.7
 - Fixed Regulator mode item and fluid counts not saving properly (raoulvdberge)
 - Fixed Wireless Crafting Monitor not closing properly (raoulvdberge)

src/main/java/com/refinedmods/refinedstorage/apiimpl/network/grid/CraftingGridBehavior.java

@@ -61,6 +61,7 @@ public class CraftingGridBehavior implements ICraftingGridBehavior {
                     } else { // for shift crafting
                         if (availableItems.get(slot) != null) {
                             refill = availableItems.remove(slot, 1).getStack().copy();
+                            refill.setCount(1);
                             usedItems.add(refill);
                         } else {
                             refill = ItemStack.EMPTY;