Clone button does not display for Git repository unless a custom URL is specified in the Repository configuration

Baseline

• New installation
• Git repo

"Defaults" URL setting doesn't display clone URL

Settings

• Verified Administration > Defaults > SCM Details > Show Checkout URL is selected:
  
• (Repository) > SCM Details > Checkout URL > "Use the system default settings for showing checkout urls" is checked AND the URL box is empty:
  

  Results

• Clone button does not appear on (Repository) > "Files":
  
• Cone button does not appear on (Repository) > "Activity":
  

Per repo URL setting correctly displays URL

Settings

• After specifying a URL in the (Repository) > SCM Details > Checkout URL > URL box (all other settings unchanged):
  

  Results

• Clone button appears correctly on (Repository) > "Files"
  
• Clone button appears correctly on (Repository) > "Activity"