In the Player Settings, "Virtual Reality Supported" is shared between multiple platforms. This isn't necessarily desirable, as on standalone platforms it's possible to use a plugin solution (for hardware targets such as the HTC Vive) rather than integrated VR (which is the only solution on, say, PS4).

Reproduction Steps:
1. Open any project's Player Settings
2. In either PS4 or Standalone, enable Virtual Reality Supported
3. Switch to either PS4 or Standalone, and see that Virtual Reality Supported is enabled on that platform as well

Expected Result:
Virtual Reality Supported should be enabled per-platform, rather than being a shared setting between many platforms.