I am facing the same issue and not able to rectify it.
var oWindow = null;
if (window.radWindow) oWindow = window.radWindow;
else if (window.frameElement.radWindow) oWindow = window.frameElement.radWindow;
and in .cs file on a button click event(I am calling this event in "LoggedIn" property of asp:Login control) I have following code :
The issue is this, rad window doesn't get close and also the parent page is not refreshed.Whereas, if I press F5 the window disappears and the parent page shows the logged in page.
Please help to sort this issue ASAP.