In IE9, the styles from the "Content Style Sheet URL" style sheet aren't being applied to the content in the WYSIWYG editor. And, the dropdown menu for "Styles" in the WYSIWYG editor doesn't appear to load either. The feature definitely still works great in Chrome, IE8, Firefox, etc.
I'm doing some crazy stuff in my style sheet, but I tried to remove everything but a simple css class with a color applied to it and see if it would work, but still nothing in IE9. Also, from what our client said, it may have been working fine a few weeks ago.
Thanks.