It’s better shown then described, so here is a short YouTube video:
http://www.youtube.com/watch?v=bksHwU7yQkc
In a nutshell:
When the WebPopup is visible and you go to OpenFeint leaderboards, then go back to the game, the status bar space isn’t reclaimed, although the status bar itself disappears. If you now exit the app via native.requestExit(), a force close message will appear shortly after.
The phone used is HTC Desire running Android 2.3.3 [import]uid: 52103 topic_id: 15717 reply_id: 315717[/import]

[import]uid: 52103 topic_id: 15717 reply_id: 59369[/import]