1.20.1 version the shipping containers do NOT work the way described as the vaults do. I use regular vault and I can make a 3x3 connected block container. With the shipping container it will only randomly connect in a 2x2 if that!
Can you fix this bug?
Unless this is intentional change you decided not to update the description with to trick people in to still adding this to packs I noticed most issues are open and ignored for months....