A week ago I was trying to configure (again) the visual editor correctly to get it working. Sadly this is a beast and the documentation is not ideal. Especially with the actual server situation.
After giving up and somehow by accident I found a rather new extension called CodeMirrow. This extension adds syntax highlight while editing a wiki article. We quickly notice some non functional “show changes” and “preview”. A bug ticket at Wikimedia’s Phabricator (
T116829) was really fast resolved. 🙂
If you do not want to use that feature, simply click on the colorful circles in the WikiEditor bar.
So as always: If you want to have a “special” extension installed, or believe that you found a bug, simply send me a mail. 😉