[OSX] Player launches in native resolution if launched in fullscreen, disregarding resolution selection in resolution dialog

Steps to reproduce:

1. Create new project
2. Build osx player
3. Run build player
4. In resolution dialog, run as native fullscreen
5. Close player and run it again, but this time in 640x480 resolution
6. Notice that it still launches in native resolution

Reproduced with: 2018.2.0b1, 2018.2.2f1, 2018.3.0a8
Not reproducible: 2018.1.6f1