Why is my Face Fill doing this strange thing I already did this once, successfully, unfortunately Blender crashed shortly afterward and my edit wasn't in the autosave file or my saved version so I am stuck with doing it again.  The first time I had all the windows highlighted as shown, and when I filled them, they obliging filled with a nice flat face.  Now it is filling from window to window through the inside of the structure which I do not want.  Why is it doing this?

https://gyazo.com/06ca0382308c77f5a77167e2466a1526
You need to use Vertex > New Face.
Shortcut: F

(while it has a similar name, Face > Fill is a different operation)