When I try to see "properties" of JSFiddle's logo, IE11 shows script error in file res://ieframe.dll/anchbrws.js

Looking at the file, I see

 function BodyLoad() {
     var arrAll = document.all;
     for (i=0; i < arrAll.length; i++) {
        var elm = arrAll[i];
        if (elm.id.substring(0,1) == "_") {
            if (elm.innerText== "undefined" || elm.innerText == "") {
                elm.innerText = L_NotAvailable_Text;
            }
        }
     }
  } 

from what I see, trying to read document.all is a stupid idea to do in IE11, which puts me to concern - is this a bug in IE's internal script or I have old version of some file(s) or my PC was compromised ?

p.s: this error does not happen on other pages, nor on other elements of JSFiddle site.