Qt::X11BypassWindowManagerHint causing issues on QT5.X

[crubel]

We have QMainWindow that we require to be ONTOP at all times on Linux. Following the QT doc we have setup the window flags as follows:

QMainWindow(parent, Qt::WindowStaysOnTopHint | Qt::X11BypassWindowManagerHint| Qt::FramelessWindowHint )

While this does put the window ontop, the data inside the window does not update it stays frozen on the info put there at startup. Removal of the Qt::X11BypassWindowManagerHint allows the window to operate normally, it just does not stay ontop of all other Qt/X windows. On QT versions prior to QT5 this was working as expected.

In the case of this window the window contains an OpenSceneGraph viewerWidget setup.

MainWindow::MainWindow(QWidget *parent) :
// QMainWindow(parent, Qt::WindowStaysOnTopHint | Qt::X11BypassWindowManagerHint| Qt::FramelessWindowHint ),
QMainWindow(parent, Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint ),
ui(new Ui::MainWindow)
{
ui->setupUi(this);

run_app = 0;
init_count = false;
pod_on = false;

QShortcut *shortcut = new QShortcut(QKeySequence("F4"), this);
connect(shortcut, SIGNAL(activated()), this, SLOT(close()));

_view = ui->graphic_view->add("POD HD");

if( QFileInfo( ConvertPath("POD_HD_Config")+"pod_hd_config.ini" ).exists() )
    readConfig();

connect(&_timer, SIGNAL(timeout()), this, SLOT(update()));
_timer.start(16);

}
...

int main(int argc, char *argv[])
{

QApplication a(argc, argv);
MainWindow w;
w.show();

return a.exec();

}

Any hints would be appreciated...I can post more code if needed, but the code is property of our
customer so I can only post snippets until I get a small selfcontained app created.

Thank you,

Curtis Rubel
crubel@compro.net