Mac cocoa only: QKeyEvent Qt::Key_Tab not accessible to event or eventFilter

The QKeyEvent Qt::Key_Tab is not accessible to event or eventFilter

for example, I added my own widget event(QEvent*) method to trap keypress events and check for Key_Tab (exactly as defined in the events docs: http://doc.trolltech.com/4.6/eventsandfilters.html

bool MyWidget::event(QEvent *event)
{
if (event->type() == QEvent::KeyPress) {
QKeyEvent *ke = static_cast<QKeyEvent *>(event);
if (ke->key() == Qt::Key_Tab)

this does not work on my Mac 4.6.1 cocoa, but works as expected on mac 4.61 carbon and X11/Linux.

Update:
Qt::Key_Tab seems to be not working with Qt::Meta modifier (Ctrl)if we set a shortcut with QKeySequence(Qt::META + Qt::Key_Tab) then Ctrl+Tab will not trigger the action if it is using cocoa, It works perfectly fine on carbon.

Attached example testCtrlTabKeySequence.tar reproduces this