Board Thread:Support Requests - Designing Your Wiki/@comment-44642442-20200103022826/@comment-168424-20200103221729

Editing MediaWiki:Wiki-navigation is handled as a special case in the editor. When you hit Preview the preview should reflect your changes and then you can Publish from there if satisfied. Do you see the expected behavior in the Preview window?

If you click Publish from the Preview window and your changes don't show up as they did in the Preview window it might be a bug.