QInputDialog hangs if VoiceOver is enabled on El Capitain

Put the following code in a widget based Qt app:

bool ok;
QString str = QInputDialog::getText(this, tr("Foo bar"),
tr("More foo:"),
QLineEdit::Password, "bar", &ok);

Enable VoiceOver (cmd+F5) and run the above code. Once you start typing in the input field the application hangs.