Thanks for this important mod!
I installed the mod on my nitrado server. Before I played about 5 hours and have harvested some resources stocked in the mortar and small box. I rebuilt and relearned the pestle and mortar as described.
I have now strange behavior: some resources stack as intended and some not. For exemple I can stack berries >100 in Parasaur and Pestle&Mortar but I cant stack my narcotics in the mortar. I had a Stack of 52 narcotics in my inventory but I could not stack i witch other narcotics.
Same with 19 metal in my inventory I cant stack them with the other 19 in my storage box.
Similiar with stones I cant stack more than 100. I have built another storage box but I cant stack more than 100.