Can't change to Orthographic View when viewing Character assets in Editor

When attempting to view an Animation Blueprint, Skeletal Mesh, or Physics Asset in any of the Orthographic views the Editor remains in Perspective View. This is a regression as the issue was not present in 4.17.2 (CL 3658906). It is currently broken in 4.18.1 (CL 3754814) and Main.

1. Open/Create a ThirdPerson project
2. Navigate to any animation blueprint, skeletal mesh, or physics asset and open it
3. Click where it says 'Perspective' and try to change the camera angle to Top, Bottom, Left, or any other Orthographic view

Result: The view stays in Perspective View

Expected: It changes the view to Top, Bottom, Left, and etc