The Portable Grid now doesn't despawn anymore when dropped in the world, update changelog

src/main/java/com/raoulvdberge/refinedstorage/item/ItemBlockPortableGrid.java

@@ -50,6 +50,11 @@ public class ItemBlockPortableGrid extends ItemBlockEnergyItem {
         return super.onItemUse(player, worldIn, pos, hand, facing, hitX, hitY, hitZ);
     }
 
+    @Override
+    public int getEntityLifespan(ItemStack stack, World world) {
+        return Integer.MAX_VALUE;
+    }
+
     @Override
     public boolean shouldCauseReequipAnimation(ItemStack oldStack, ItemStack newStack, boolean slotChanged) {
         if (oldStack.getItem() == newStack.getItem()) {