MW 1.35.6 / PHP 7.4.27 / CodeMirror 4.0.0
Despite the option being enabled, line numbering does not work.
$wgCodeMirrorLineNumberingNamespaces = [ NS_TEMPLATE ];
MW 1.35.6 / PHP 7.4.27 / CodeMirror 4.0.0
Despite the option being enabled, line numbering does not work.
$wgCodeMirrorLineNumberingNamespaces = [ NS_TEMPLATE ];
MW 1.37.2 / PHP 7.4.27 / CodeMirror 4.0.0
The line numbering still does not work.
Try with $wgCodeMirrorLineNumberingNamespaces = null;
→ no more success.
The CodeMirror version number is not very meaningful, unfortunately. Are you sure you updated the extension? You can check if CodeMirror/extension.json contains "CodeMirrorLineNumberingNamespaces".