You are right! I did not notice that.

This check is to filter out panel events triggered by navigating to panels other than `#call`. And we also want to ignore the event when back from `#call-cf-` and `#call-voiceMailSettings`. To make this logic clear, I would suggest to use a switch:
```
switch (e.detail.current) {
  case '#call':
    // No need to refresh the call settings items if navigated from panels not manipulating call settings.
    if (e.detail.previous.startsWith('#call-cf-') || e.detail.previous === '#call-voiceMailSettings') {
      return;
    }
    refreshAdvancedCallSettingItems();
    break;
case '#call-voiceMailSettings':
    // set focus and selection range
    break;
}