Okay, so I have on City Build Mode Zoom. When I hit Construction it will zoom in an overhead view. If I rightclick or hit "done" it will exit. All is fine.
HOWEVER, if I hit Construction two times or more, the camera will move/bump slightly and move back into its default City Build Mode position. And you are now forever stuck in this camera City Build angle looking down at the map until you exit or reload a save.
I can produce this "bug" 100%. Would be great if others could also confirm this.
I am sure this is an easy fix.