[douglas]

This is a known bug. The AI completely ignores restrictions on component use. It can't go over the tonnage limit, it might not be able to go over the engines limit, and I'm not sure about life support/crew quarters requirements, but pretty much everything else is ignored when the AI makes its designs. I remember some discussion a while back about designing a Cheater AI race, and one of the things this AI would do is build ships and bases with two space yards, getting double normal build speed.