Steps to reproduce:
- Login as a user or admin
- Go to a page, hover over "Edit" and click on "Wiki" or click on "WYSIWYG"
- Click on the green "Maximize" button
- Click on "Save & Continue"
- Click on "Exit Full Screen"
After pressing the "Exit Full Screen" button the bottom bar simply disappears.
Tested on IE8. Does not reproduce on Chrome 23, Firefox 16.0.2 and IE9.