Nothing happens if you try to hit the magnifying glass icon (Browse to Asset in Content Browser) beside Default Gamemode in the Project Settings window. It also does not work beside 'GameMode Override' in the World Settings tab.
1. Create a new project or open an existing one
2. Go to Edit -> Project Settings - Maps and Modes
3. Hit the 'Browse to Asset in Content Browser' button beside Default Gamemode
4. Notice that nothing happens
Head over to the existing Questions & Answers thread and let us know what's up.