New code introduced in Ext.util.Floating are:

Code:



 alignTo: function (element, position, offsets, animate) {
        var me = this,
            el = me.el;


        // Since floaters are rendered to the document.body, floaters could become marooned
        // from its ownerRef if the ownerRef has been rendered into a container that overflows
        // and then that container is scrolled.
        if (!me._lastAlignToEl) {
            Ext.on('scroll','_onAlignToScroll', me);
        }


        // Let's stash these on the component/element in case it's aligned to something else
        // in its little lifetime.
        me._lastAlignToEl = element;
        me._lastAlignToPos = position;


        me.mixins.positionable.alignTo.call(me, element, position, offsets, animate);
    }
,
  privates: {
        _onAlignToScroll: function () {
            var el = this._lastAlignToEl;


            if (el) {
                this.alignTo(el, this._lastAlignToPos);
            }
        }
    }



Error is:


Code:



Error: Attempted to align an element that doesn't exist
    at new Ext.Error (app.js?_dc=1423753290929:1000:21)
    at Function.Ext.apply.raise (app.js?_dc=1423753290929:1081:23)
    at Ext.define.getAlignToXY (app.js?_dc=1423753290929:24167:23)
    at Ext.define.alignTo (app.js?_dc=1423753290929:24045:28)
    at Ext.define.alignTo (app.js?_dc=1423753290929:52174:40)
    at Ext.define.privates._onAlignToScroll (app.js?_dc=1423753290929:52497:22)
    at fire (app.js?_dc=1423753290929:17917:37)
    at doFireEvent (app.js?_dc=1423753290929:18704:47)
    at prototype.doFireEvent (app.js?_dc=1423753290929:48526:35)
    at fireEventArgs (app.js?_dc=1423753290929:18640:26)