Demo App: Scene doesn't repaint properly after selecting QuadCurve Connection Shape

[chaddaniels]

In the demo app the scene is not repainted automatically when switching the Connection Shape to QuadCurve. To see this, simply open the demo app, change the Connection Shape to BentLine, and then back to QuadCurve. It will only repaint properly once the mouse is moved onto the scene. It works properly on all the other Connection Shapes. I believe this is because the mouse is already hovering over the scene once any non-QuadCurve Connection Shape is selected and the combo box disappears. When selecting the QuadCurve Connection Shape the mouse is NOT over the scene so it does not repaint.

In the image below notice that the only region that was repainted properly was the region where the combo box was showing.