Why does camera jump up and down by a floor on some houses not others?

Thank you for the replies.

When I created a new mini house on the same lot, even after destroying the house (but not the lot), I get the same "raise up camera" issue on the external house walls even with no foundation.

But as soon as I "bulldoze" the entire lot after saving the individual rooms and rebuild the house from scratch with copy/paste of the rooms, the issue is no longer present. Definitely a bug of sorts it seems.