修改文件中onTransitionEnd方法如下:

onTransitionEnd: function (e) {
    var target = e.target,
        id = target.id,
        propertyName = e.browserEvent.propertyName,
        styleDashPrefix = Ext.browser.getStyleDashPrefix();
    if (id && this.runningAnimationsData.hasOwnProperty(id)) {
        if (Ext.feature.has.CssTransformNoPrefix) {
            if (propertyName.indexOf(styleDashPrefix) >= 0) {
                propertyName = propertyName.substring(styleDashPrefix.length);
            }
        }
        this.refreshRunningAnimationsData(Ext.get(target), [propertyName]);
    }
}

文章来源：http://www.cnblogs.com/cjpx00008/p/3535557.html