Setting bIsOrthographic does not change the view to/from Orthographic view

Editing the bIsOrthographic variable in PlayerCameraManager does not cause the view to change to/from Orthographic

Regression?: Yes
This worked correctly in 4.17.2-3658906+++UE4+Release-4.17
This does not work correctly in 4.18.1-3754814+++UE4+Release-4.18

1. Download the attached project, generate project files, compile, and open the project
2. Press Play
   Result: The viewmode does not change the Orthographic
   Expected: The viewmode changes to Orthographic