When closing a modal window in the Shortcut Manager, a warning is produced in the console:

Style sheet not found for path "StyleSheets/ShortcutManager/Common.uss"UnityEditor.GenericMenu:CatchMenu(Object, String[], Int32)

1. Install Unity
2. Open Unity
3. Create a new project with any settings
4. When the project is created, go to Edit > Shortcuts
5. Go to User Profile > Create New Profile
6. Create a new profile with any name

Expected Result:
The modal window is closed and no errors or warnings appear in the console.

Actual Result:
When the modal window is closed, a warning is produced in the console.

Tested on Windows.

Occurs on 2019.1.0a13

Does not occur on 2019.1.0a12