How to reproduce:
1. Open attached project
2. See in Player Settings that it has FullScreen Mode set to 'MaximizedWindow'
3. Build & run for OS X
4. Enter fullscreen with the Screen.SetResolution button and exit fullscreen with CMD+F hotkey
5. Enter fullscreen with the CMD+F hotkey

Expected result: in both cases, the fullscreen mode is Maximized Window
Actual result: in both cases, the fullscreen mode is Full-Screen Window

Reproducible with: 2018.2.2f1, 2018.3.0a7
Not reproducible with: 2018.1.9f1

Notes:
Screen.fullScreen does not have this issue
Although in 2018.1.9f1 this issue is not present, the label still incorrectly displays full-screen mode after using Screen.SetResolution and CMD+F