I have a Window inheriting QGaphicsView with the attributes Qt::FramelessWindowHint|Qt::Window

When restoring that window ( previously minimized by showMinimized), the value of windowState is not updated

There is a workaround for showMinimized:

 
void Window::minimize(){
	 setWindowState(windowState()|Qt::WindowMinimized);
	 QApplication::processEvents();
	 setWindowState(windowState()&~Qt::WindowMinimized);
}

I traced the event when restoring the window and nothing appear (in both event and changeEvent), I guess that is the root cause of this issue.