shells exploding when carried home

[Ganimedes]

so i was hauling the loot left from my latest siege when i noticed that every time my colonist tries to carry 2 or mores stacks of shells they explode. i though this was intended, like a little chance of a shell to explode but then i realiced that if you carry the 2 stacks separately they dont explode. so for example if you have a stack of 9 shells and other stack of 3 shells and you unforbid both, your colonist will try to haul all 12. the explosion always occurs when they try to grab the second stack while having the first stack on them.
i hope i made myself clear, if not tell me and i will try to explain the situation better. english is not my mother language        

[Goldenpotatoes]

I can confirm this happening on an unmodded save, I've lost maybe 6-7 colonists alone from this bug.

[Tynan]

Thanks, fixed.