All Scores and About Menus Can Have Multiple Instances Open

EXPECTED BEHAVIOR

Only one instance of the All Scores or About windows can be open at once.

ACTUAL BEHAVIOR

An unlimited number of instances of the All Scores or About windows can be open at once.

HOW TO REPRODUCE

1. Launch Primary 0.3.2 on Android 8.1.0
2. Tap the 3 Vertical Dots in upper right
3. Tap 'All Scores'
4. Repeat Steps 2 & 3 multiple times
5. Tap the Android Back Button multiple times

TESTING ENVIRONMENT

• Device: Pixel 2 XL
  
• OS: Android 8.1.0
  
• App Version: 0.3.2
  

RECORDING OF THE BUG