Qt4.4.0: Bug with WA_UpdatesDisabled vs. WA_ForceUpdatesDisabled and QAbstractItemView

QWidget.cpp:
void QWidget::setUpdatesEnabled(bool enable)

{ Q_D(QWidget); setAttribute(Qt::WA_ForceUpdatesDisabled, !enable); // Here the "Force"-Flag is set d->setUpdatesEnabled_helper(enable); } QWidget.h: inline bool QWidget::updatesEnabled() const { return !testAttribute(Qt::WA_UpdatesDisabled); }

// UpdatesDisabled
without "Force".

Problem:
void QAbstractItemView::mousePressEvent(QMouseEvent *event)
{
...
bool updates = d->viewport->updatesEnabled(); // Test flag without
"Force"
d->viewport->setUpdatesEnabled(command ==
QItemSelectionModel::NoUpdate);
d->selectionModel->setCurrentIndex(index,
QItemSelectionModel::NoUpdate);
d->viewport->setUpdatesEnabled(updates); // Set flag with "Force"
...
}

This works only if the updates were not disabled before testing.