Turning new Depth of Field effects on/off does not fully update the game view if the effect is placed above the new Anti Aliasing effect.

Repro steps:
1. Open TestScene from attached project.
2. Select Main Camera from the Hierarchy and make sure Game view is visible.
3. Turn off Depth of Field script from the Main Camera
4. Observe in the game view that the depth of field is not fully removed.
5. Click on the game view
6. Observe how the view is now properly updated.

Expected outcome: game view to automatically update when effects are enabled/disabled

Notes:
- Cosmetic issue, clicking on game view manually refreshes view.
- Issue is not reproducible when Anti-Aliasing is above Depth of Field.
- Issue present with all render paths (project set to Deferred to avoid screen-flip bug).
- This issue appears only with the new image effects (obtained from the image effect fetcher) and is not present with the classic effects.
- Tested for regression as far back as 5.3.1f1