Aha Found a couple problem options   I just found that setting var wikEdHighlightSyntaxPreset causes a loading error The error console shows  Error wikEdFindAheadSelected is not defined Source file httpenwikipediaorgwindexphptitleUserACacycleFwikEdjsactionrawctypetextjavascript Line   I dont know why a variable is suddenly undefined though  I think setting wikEdUseWikEdPreset to false also messes things up the only buttons that appear are the leftmost box with the toggles for the options with that option set to false  Lastly what happened to the improved diff view on diff pages I cant seem to get the button Improve me