Hello @ASTI
Regarding the tab issue, we have this issue logged to our issues tracker and it should be fixed in one of the upcoming releases, however, I don’t have an ETA for this update.
Meanwhile, you can add this JS snippet to (Theme Options > JS) and this will fix it temporarily:
jQuery(function($){
$('.vc_tta-tabs-list li a').on('click', function(){
setTimeout( function() {
$('html, body').stop();
}, 100 );
});
});
For the other JS issue, I suggest removing any other custom JS codes you added and recheck the browser console, also you might disable your plugins one by one till you find the culprit.
Thanks.