I think you left out some bits of that last building still sunk and all quirky, cause all of my windows had quirky vertices and not just the ones around the corners of the building.
I kind of fixed them on my own, but I just wanted to point that out in case you forgot.
Yup... saw that as well on my building. I retried the bevel/inset but to no avail. Then I tried to see if you had the same issue, but panned around the building too fast to notice. THAT is a lot of putzing.
Was just about to ask the same question, when I filed through these. Thank you for asking ssweetbytez