Guild Wars 2

Let’s say my guild bank has a pile of 50 mats. I want to add 50 of the same to that pile, I can’t, no matter whether I have rights or not: I have to withdraw the items then compact them then put them back alltogether. Items should be stacked automatically when we drop a pile onto another.

Steps:
1)Take 50 out of bank.
2)Stack into 100 in your inventory.
3)???
4)Profit. Or putting the 100 back into the bank. Your choice, really.