Steps to reproduce:

1. Open attached project
2. Make sure that Editor is running in OpenGL mode (not Metal)
3. Open the 'CorridorDemo' scene
4. Make sure the Game View is visible
5. Notice that almost entire Game window is black (screenshot #1) and "Invalid pass number for Graphics.Blit" errors are spammed in the console

Notes:
Metal builds and game view with Metal Editor enabled seems to work fine.
Builds made with OpenGLCore graphics API are also affected, though a little bit differently (screenshot #2).
You can select 'Profiles/CorridorProfile' asset and disable 'Screen Space Reflection' image effect to observe that the issue disappears.

Reproduced with: 2017.1.0b1, 2017.1.0b5
Doesn't reproduce with: 2017.1.0a1