We can only push back the items if we are a crafting grid

src/main/java/refinedstorage/tile/grid/TileGrid.java

@@ -203,9 +203,11 @@ public class TileGrid extends TileMachine implements IGrid {
                 ItemStack slot = craftingInventory.getStackInSlot(i);
 
                 if (slot != null) {
+                    if (getType() == EnumGridType.CRAFTING) {
                         if (!controller.push(slot)) {
                             return;
                         }
+                    }
 
                     craftingInventory.setInventorySlotContents(i, null);
                 }