ng-class screwed up

[synergetic]

I was using bootstrap 3.0.2 glyphicons with ng-class, and it worked fine with Angular JS 1.2.14. After moving 1.2.16, the icons were not displaying correctly when classes are dynamically changed. Below are part of js code of my tree directive:
var iconElem = document.createElement('I');
iconElem.className = "my-tree-node-icon";
iconElem.setAttribute("ng-class", "{ 'glyphicon glyphicon-folder-close': !expanded && " +
"item.is_parent, 'glyphicon glyphicon-folder-open': expanded && " +
"item.is_parent, 'glyphicon glyphicon-file': !item.is_parent }");
wrapperElem.appendChild(iconElem);

There seems to be the same issue before:
#6419

Is this bug reocurring again?

[synergetic]

Well it seems to be fixed in 1.2.17.