WYSIWYG Editor problem in Firefox

Recently I have had 2 different customers complain about the WYSIWYG editor not displaying content. I have duplicated the issue using Firefox 11.0. When I select a section editor with WYSIWYG Tiny MCE editors, they will originally display as being blank. If you open the HTML editor, the proper content is displayed, but the WYSIWYG editor remains blank.

After playing with the page a bit I noticed that if I resize the viewport, the content will display in the WYSIWYG editor correctly. Refresh the page and the content in the WYSIWYG editor dissappears again, resize the viewport and it will re-appear.

Does any one have any ideas as to what might be going on?

NOTES:The sites reported are on v 2.04 and v.2.06 and the problem has been reported to occrur in IE 8 as well, but I have not been able to duplicate the priblemt in IE.