I set up the initial build order, say 2 mex, power plant, mex, factory. Every now and then, when it gets to building the pp, it's as if the order was forgotten. It's gone from the queue, and it goes straight to the next order. I assume this is a collision issue. Typically happens when you order 2 mex and a pp between them. The pp placement is recognized as a valid location when the order is given (and note that collision is calculated then), but when it comes to the actual building, it is no longer valid. In other words, the initial collision detection seems inaccurate. This is something that needs to be ironed out, because you can't have the commander forget to build that pp before the factory. That's likely game over in high level play. Also posted on the bug tracker.
