Looking to get rid of this effect. Read a suggestion that said setting the clipping planes to a negative value should work, but the clipping planes in a scene view seem to be prevented from being zero or lower.
SceneView.lastActiveSceneView.cameraSettings.nearClip = -500f;
SceneView.lastActiveSceneView.camera.nearClipPlane = -500f;
This works, but opening the camera settings for the scene will reset the value. Probably a good idea to throw this in something that updates automatically in the editor.