This code will display the distinguished name of a group or user in the interface instead of the display name. Store these files as snippets in your browser developers tools and run them when needed.

Show principals display name.js

// Restore the original function, showing the display name
if ( acceUtil ) {
  if ( acceUtil.originalGetSecurityPrincipalDisplayName ) {
    acceUtil.getSecurityPrincipalDisplayName = acceUtil.originalGetSecurityPrincipalDisplayName;
    console.log("Showing the principals display name");
  }
}

Show principals distinguished name.js

// Shows the principals distinguised name in ACCE
if ( acceUtil ) {
  if ( !acceUtil.originalGetSecurityPrincipalDisplayName ) {
    acceUtil.originalGetSecurityPrincipalDisplayName = acceUtil.getSecurityPrincipalDisplayName;
  }

  acceUtil.getSecurityPrincipalDisplayName = function(name)  { 

    // Change this value to show more (or less) parts:
    var partsToShow = 3;
  
    return name.match(/([^,]+)/g).slice(0,partsToShow).join(','); 
  }
  console.log("Showing the principals distinguished name");
}