How to reproduce:
1. Open the attached 'project-1178367.zip' project
2. Load 'DepthTest' scene
3. Observe and compare the Scene and Game windows

Expected result: the cube is rendered the same in the Scene view as in the Game view
Actual result: the cube is rendered differently in the Game view compared to the Scene view

Reproducible with: 2019.2.6f1 (6.9.0, 6.9.1), 2019.3.0b3 (7.0.1), 2020.1.0a4 (7.0.1, 7.1.1)
Could not test with: 2017.4.32f1 (Package Manager not available), 2018.4.9f1 (due to shadergraph errors)

Notes:
1) The cube seems to be rendered somewhat inverted (considering the depth values in the Shadergraph) in the Game view
2) If Unlit Master node's surface is set to 'Opaque' the Scene view's cube will be black while the Game view's cube is white. Scrolling/clicking, while the mouse is within the Game window, will cause the cube to be flickering