Couldn't really find a suitable forum for forum issues but...
 
The scroll to top button next to the forum when not at the top of the page doesn't work when updating to Chrome 61. The button is displayed but clicking it does nothing. Looks like the scrollTo plugin got borked by it.
 
I made this as a quick alternative.

$(function(){
   $('.backtotop').off('click').on('click', function(){
      $('html, body').animate({scrollTop:0}, 200);
   });
   var hash = location.hash;
   if(!hash) return;
   var $id = $("#msg"+hash.replace(/\#/,""))
   if(!$id.length) return;
   $('html, body').animate({scrollTop:$id.position().top}, 200);
});