How to reproduce:
1. Open Unity
2. Open any Unity project
3. Build it as a Windows Standalone Build
4. Try running it while using '-force-glcore' or '-force-gles'

Expected result: Unity runs the game
Actual result: Unity displays an error message.

Error message:
Failed to initialize player
InitializeEngineGraphics failed

Reproducible with - 5.6.4p3, 2017.1.2p3, 2017.2.0p4, 2017.3.0b11, 2018.1.0a7

Reproduced on:

• PC
• Windows 10 64bit
• Intel(R) Core(TM) i5-6400 CPU @ 2.7Ghz
• 16GB RAM
• NVIDIA GeForce GTX 1050
• Windows 10 Pro 64-bit