Greetings!
With APC added to the game, engineer-APC rush becomes viable early strategy.
Yet sometimes capture does not work properly, although it doesn't prevent the game from properly finishing. The building is somewhat captured, but it is still not controllable by player (no functions including build area) and still have the color of its previous owner.
You can help by EXPANDING IT.
Yes, I noticed it just yesterday when capturing Ore Fracking facilities too :-/
Owner of Ape Apps, LLC