A single shipping container can only hold one stack of items, compared to the 20 stacks a normal vault can hold.
Is this intended or an error?

I'd like to add that on contraptions they store up to 20 stacks as they should, and keep them after disassembly

Adding to this, it seems that mining a container block voids its contents. This is counter-intuitive considering the vault block drops its contents as items when mined.

Also see #110

I'd like to add here,

Anytime the shipping container gets any sort of block update it loses it contents whereas normal vaults from create update.

• When put on trains (constructed/deconstructed) they reset inventory unlike normal vaults.
• When any part of a shipping container is broken they remove all inventory.
• When made bigger, anything in the smaller one is removed.
• On Server restarts the container contents is wiped.
• Significantly lower storage space compared to vaults - Using JADE mod to confirm this.
• Their construction calculations for 3x3x1 or 2x2x1 are not as inline with the calculations for standard vaults.

Essentially, as of writing this, Shipping containers should NEVER be used for storage as the risks of losing items isn't 'High' but guaranteed. Right now, they are great only as visual deco, which is fine since the mod name suggested they would be, but if functionality is added to them, which it has been, it needs to work to a degree of stability.

I'd argue this Issue should simply be renamed to 'Shipping Containers do not function and seem unstable'.

All of the above has been tested and is very easily replicated.

EDIT: My tests were done on the latest release of this mod as of the date of this message.