When you edit a page with visual editor the top menu seems broken. Here's a pic of what I'm looking at. visual-editor.jpg (3127×492) (venciclopedia.org)
Topic on Skin talk:Pivot
Add this to your MediaWiki:Pivot.css:
.ve-init-target-visual .oo-ui-barToolGroup > .oo-ui-toolGroup-tools > .oo-ui-tool.oo-ui-widget-disabled > .oo-ui-tool-link, .ve-init-target-visual .oo-ui-barToolGroup.oo-ui-widget-enabled > .oo-ui-toolGroup-tools > .oo-ui-tool > .oo-ui-tool-link {
display: block !important;
}