runSecureNavigation fails with submitButton widget

[nickgeoca]

Description: runSecureNavigation appears to fail with submitButton widget. Behavior is after submiting data, one expects next page to load, but repeats the same page with submitButton. It has behaved differently before in that it goes to next page, but then goes back to submitButton page when user tries to go forward.
Line: haskell <** submitButton "Submit"
Version:

• GHC 7.10.2
• MFlow-0.4.5.11

{-# LANGUAGE OverloadedStrings #-}

module Main
where
import MFlow.Wai.Blaze.Html.All hiding(main)
import qualified MFlow.Forms as F
import Data.Typeable
import System.IO.Unsafe


sitePages :: FlowM Html IO ()
sitePages = do 
  page $ wlink () << b "Here A"
  page $ wlink () << b "Here B"
  someVal <- page  
    $   getString Nothing <! hint "Test" 
    <++ br
    <** submitButton "Submit"
  page $ wlink () << b "Here 1"
  page $ wlink () << b "Here 2"
  where
  hint x = [("placeholder", x)]

main :: IO ()
main = do 
  setAdminUser ("admin"::String) (""::String)
  runSecureNavigation "" . transientNav $ do
      sitePages