SUMMARY The panel minimum width calculation is wrong, and calculates as if the panel edit button is present, even when it isn't. STEPS TO REPRODUCE 1. Create a panel with a few widgets that's shorter than its maximum width 2. Exit edit mode OBSERVED RESULT Notice the edit mode size is kept, despite the customization button disappearing EXPECTED RESULT The panel resizes to only take up as much room as the widgets it contains.
*** This bug has been marked as a duplicate of bug 416292 ***