[Gtk2hs-users] Bug: ComboBox does not display popup (gtk3 package)

[Unknown]

Hello,

first of all, thank you so much for making Gtk2Hs work with GTK 3.

There is a problem with ComboBox and GTK 3: the combo boxes don't
display their popup. ComboBoxText works right, though.

Here is an example. If I compile it against the gtk package, everything
works well. But if I compile it against the gtk3 package, only the
ComboBoxText displays its popup.

module Main where

import Graphics.UI.Gtk

list = [
stockOk,
stockCancel,
stockEdit,
stockDialogInfo,
stockDialogQuestion,
stockDialogWarning,
stockDialogError
]

main = do
initGUI

w <- windowNew
on w objectDestroy mainQuit
set w [windowDefaultWidth := 100]

b <- vBoxNew True 4

l <- listStoreNew list

c1 <- comboBoxNew
s1 <- cellRendererPixbufNew
cellLayoutPackStart c1 s1 True
cellLayoutSetAttributes c1 s1 l $ \r -> [cellPixbufStockId := r]
comboBoxSetModel c1 $ Just l

c2 <- comboBoxNew
s2 <- cellRendererTextNew
cellLayoutPackStart c2 s2 True
cellLayoutSetAttributes c2 s2 l $ \r -> [cellText := r]
comboBoxSetModel c2 $ Just l

t <- comboBoxNewText
mapM_ (comboBoxAppendText t) list

boxPackStart b c1 PackNatural 0
boxPackStart b c2 PackNatural 0
boxPackStart b t PackNatural 0
containerAdd w b

widgetShowAll w

mainGUI

After reading the documentation for both packages I could not find any
implementation changes, so I think there might be a bug in the gtk3
package.

Best regards,
Alfonso Villén