Hi Richard,
I got it now! I couldn’t picture it because I never setup for that combination before. In the top picture, I would say you have the setting on the Base (or Upper) Cabinets tab called Side Position set to “Captured”. In the second photo, it looks like the setting is set to “Outside”. Basically, the job of this setting is to indicate whether you want the cabinet constructed with the top and bottom captured between the sides or have the sides captured by the top and bottom. I don’t understand why it would randomly draw it one way or the other. It should be dependent on the state of that setting. Could you check and see what it’s set to?