@peterflynn Good tip on testing nested modal dialogs. I haven't been able to find any problems due to race conditions, or otherwise -- let me know if you can remember any particular cases that were problematic.

@larz I did notice a weird case with nested dialogs though. I started with Extension Manager, then went to "Install with URL...". The problem I'm seeing is that the dark "backdrop" flashes a light color every time I enter or exit the nested dialog.