Toggling Vertex Colors on in Static Mesh Editor makes the viewport all white

When turning on the Vertex Color option in the static mesh editor, the whole viewport turns white.

1. Open QAGame in editor.
2. Open any static mesh.
3. In the Toolbar, toggle Vertex Color on.

RESULT:

Viewport becomes all white.

EXPECTED:

Either only the static mesh is affected by the Vertex Color option, or the environment and sky are hidden when it's on.