The theme is called Gameup by magazine3.
I think it might have to do with this piece of code in the header.php
function createTicker(){
// put all list elements within #ticker-area into array
var tickerLIs = $("#ticker-area ul").children();
tickerItems = new Array();
tickerLIs.each(function(el) {
tickerItems.push( jQuery(this).html() );
Went through all the plugins and they aren’t causing it. Switched the theme and the admin menus worked again so it seems as though its the theme. The dev said he was going to fix it but that was two weeks ago. Someone else told me it was because of not enqueueing the java scripts or something.