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Comment post ReturnUrl is lost and user is redirected to the home page
When saving a comment CommentController.Create()'s returnUrl param is blank (despite the right action url) so after posting the comment the user gets redirected to the home page.
If I remove the [HttpPost, ValidateInput(false)] attributes from CommentController.Create() and try to open it up from the browser by using the url copied from the form it correctly gets the returnUrl. However posting the form still doesn't work.