I have Installed VisualEditor version 0.1.2 on MediaWiki version 1.41.0 with LocalSettings.php configuration:
wfLoadExtension( 'VisualEditor' ); $wgDefaultUserOptions['VisualEditor-enable'] = 1;
and some additional access to namespaces.
On Wikipedia VisualEditor is also in use, but has a total different look-and-feel. There the signature function does work.
What can be the reason? And how can I solve it?