id summary reporter owner description type status priority milestone component version resolution keywords cc 7771 'Maximize' in container with Opacity makes container disappear (FF) Machiel "Example: http://tvz.myhomework.nl/ckeditor_problem.html The simple container has opacity (CSS3) set. When you click the Maximize button, the entire container disappears, leaving only the background left. When I remove the opacity from the container, the Maximize button works fine. CKEditor is version 3.5.3. I am using Firefox 4.01. Internet Explorer 9.0 seem to work okay. Apparently FF3.6 has the same issue, see also http://cksource.com/forums/viewtopic.php?f=6&t=22363 " Bug confirmed Normal General 3.5.3 Firefox