Disabling input validation on action, which then throws an exception doesn't log

[GoogleCodeExporter]

I have an MVC3 site with a controller action that has
[ValidateInput(false)]
One of the paramters is an xml string.
When an exception is thrown inside that action, elmah does not log the 
exception.
I tracked it down to the method in Error.cs below throwing an exception about 
"a potentially dangerous request....."
        private static NameValueCollection CopyCollection(NameValueCollection collection)
        {
            if (collection == null || collection.Count == 0)
                return null;

            return new NameValueCollection(collection);
        }

To work around the issue I turned off all input validation for the site.

Original issue reported on code.google.com by twobitb...@gmail.com on 18 Apr 2013 at 3:39

[GoogleCodeExporter]

Er, this should probably be a defect, not an enhancement, but it doesn't look 
like I can change it.

Original comment by twobitb...@gmail.com on 18 Apr 2013 at 3:40