Thread:Extension talk:WYSIWYG/WYSIWYG works by IP but not by URL/reply (3)

It's not a DNS problem. We don't have $wgServer set in LocalSettings.php.

The only symptom here is that the editor would not show up when the server was addressed by URL rather than IP. Everything else is normal in the page displays. So somehow it seems the CKeditor JavaScript is getting lost. Is there some variable within it that depends on that $wgServer setting?