QWidget doesn't become active after losing it to a QDialog that contains a QGLWidget...

I have a QWidget window with QToolButtons in it. I then create manually create a QDialog that includes a manually created Okay button and a manually created QGLWidget. When I click the okay button, its clicked signal is received by the dialog's accept slot. The dialog disappears, returning the Accepted enum. However, the QWidget window does not become active even though it is the only open window. I've created a test project includes as an attachment that shows the issue running on my Mac Book Pro 10.9.1