As far as I can see that set of windows doesn't include any of the shapes I described. It does have 'cut outs' but they are curves, which don't have the same problem.

Edit: Actually, I see what you were referring to now. The two pieces at the top of each window in the door. I can't say that I know how that was accomplished. I've never seen something like that before. It might be revealing to see an image with a higher resolution.