I'm using this class http://www.deluxeblogtips.com/p/meta-box-script-for-wordpress.html to create custom meta-box in which it contains some WYSIWYG editors. It works fine until I upgraded my WP to 3.2. The WYSIWYG editors are now have white text background and all tinyMCE buttons are gone!
I guess they've changed quite a lot of things in TinyMCE editor in this 3.2 version to accommodate the "full screen editing" stuff. Bad for me though, it destroys my custom metabox... And there is no documents about this change, at all