[SailfishDevel] cover stays after app has quitted

[Wim de Vries]

Hi all,
After quitting the app, very often, the cover is still there (sometimes 
garbled).
It works ok when the shutDown function is called from the pull-down menu.
(MyesNoDialog is used as a message Dialog).
QML:

Page..

      if (saveFailed)
       {
       var errorDialog = pageStack.push("MyesNoDialog.qml", {text : 
"FATAL ERROR: CANNOT SAVE.\nSHUTTING DOWN\n"})
          errorDialog.accepted.connect(
          function()
             {
       myqquickview.shutDown()
             })
          errorDialog.rejected.connect(
          function()
             {
       myqquickview.shutDown()
             })
       }

C++ (myqquickview):

void MyQQuickView::shutDown()
{
qWarning() << "shutting down";
close();
}

Thanks.