different behavior with ghcjs vs ghc(jsaddle-warp)

gistfile1.txt

{-# LANGUAGE OverloadedStrings #-}
module Main where

import Control.Monad
import Reflex.Dom

main :: IO ()
main = run $ mainWidget' $ do
  (outer, inner) <- el' "div" $ do
    fmap leftmost $ forM ["FOO", "BAR"] $ \l -> do
      elStopPropagationNS Nothing "div" Click $ do
        click <- button l
        return $ l <$ click
  dynText <=< holdDyn "" $ leftmost ["OUTER" <$ domEvent Click outer, inner]