When building the HDRP template project in 2019.3.0a12, the resulting build is a flickering grey screen instead of the game scene visible in the editor.
Similar issue in 2019.3.0a11 and 2019.3.0a10. However instead of a flickering grey screen, it is a solid black screen.

This occurs when using the MacOS Metal Graphics API.

1. Create a new HDRP Template Project.
2. Go to File -> Build Settings
3. On the Build Settings window, select Player Settings -> Player and expand the ‘Other Settings’ dropdown
4. Uncheck ‘Auto Graphics API for Mac’ if it is checked.
5. Add the Metal to the ‘Graphics API for Mac’ list if it is not present, and remove OpenGLCore.
6. Ensure the sample scene is added to the Build Settings.
7. In Build Settings click ‘Build and Run’
8. Observe the program that runs after building.

Expected Outcome: The built program displays the objects as seen in the game scene.
Actual Outcome: The built program displays a solid colour instead of the scene.

Replicated in 2019.3.0a12 - build shows a grey screen.
Similar issue in 2019.3.0a11 and 2019.3.0a10 - builds show a solid black screen.

No issue in 2018.4.5f1, 2019.3.0a6 or 2019.3.0a9

License type: Pro