ComboBox fullscreen issue

Short version: ComboBox's dropdown works and renders  properly before fullscreen, but not during or after.

I'm not  totally sure how to ask this, so I've actually made a page demonstrating the  error, with a very simple Flex app, and all three directions you  need to experience the problem yourself.

For those of you not daring enough  to follow my link above, I'll do my best to explain here. I've built a  more extensive Flex application (not the one in the link) that has some  graphs and charts and checkboxes and other controls for those charts. At  the bottom of app in a few of the application States, there is a ComboBox.  Because this is at the very bottom, when you click it to access it's dropdown menu, Flex thoughtfully has it come out of the top.  Yay, Flex!

This works  well until Fullscreen mode. Upon entering fullscreen, I scale everything  up with a stage.scaleMode = StageScaleMode.SHOW_ALL. Now when you  click on the ComboBox, the dropdown is astonishingly large, and  actually drops beneath the ComboBox, causing it to mostly disappear  off-screen. The best part is, once you exit fullscreen mode, the  dropdown insists on continuing to drop below the ComboBox, which is  positioned at the bottom of the app, and so continues to be cut off.

Has anyone else run into this beast, stared into it's great maw, and come away victorious?  Am I doing fullscreen mode wrong?  Please help!

You can get the source code via View Source from the Flash player in the link, and thank you so much for your time.