Affects Version/s: 6.0.12 EE, 6.1.0 CE GA1, 6.2.0 CE M2
Component/s: Content Display Widgets > Iframe widget
If an Iframe is added on page and source url is left blank, at refresh, the page will redirect to "http:///?" on Internet Explorer, leading to a "the address is not valid" page.
Steps to reproduce on Internet Explorer
1) Add Iframe portlet
2) Edit Configuration
3) Leave source url blank
5) Refresh browser