Content box does not display in Web Content, Blogs, Wiki, or Message Boards when adding new ones on IE9

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.1.X EE, 6.2.0 CE RC1, 6.2.0 CE RC2
• Fix Version/s: 6.1.X EE, 6.2.0 CE RC2
• Component/s: CKEditor, Frontend Infrastructure, Web Content > Web Content Administration
• Labels:
  • QA-NA
  • liferay-fixpack-user-interface-10-6130
• Environment: Tomcat 7 + MySQL 5. Portal 6.2.x CE GIT ID: 841429d6a56bb6ffd736d14762727f5b8331ca73.; Tomcat 7 + MySQL 5. Portal 6.1.x EE GIT ID: 3a316ae41cd8961171acf128aa4891a87c67113b
• Branch Version/s:
  6.1.x
• Backported to Branch:
  Committed
• Fix Priority: 5
• Browsers:
  Internet Explorer 9
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/14128

Steps to reproduce:

1. Navigate to Admin > Content > Web Content, Blogs or Message Boards
2. Add a content of the particular type

1. Navigate to Admin > Content > Message Boards
2. Click [Post New Thread]
3. See content field (as expected)
4. Refresh the page.
5. See missing content field (bug)

Expected result:
User will be able to see the content field and input content there.

Actual result:
User cannot see any text box for content input. See screenshot; when checking on HEAD in 6.2.x, there were missing ckeditor options in IE9, but other browsers were ok (FF_22, Chrome 29).

Update: Seen on Chrome 29 when on Weblogic 11 + SQL Server 2012.

Note: To get the content field to show again, you need to clear your browser cache and refresh.

Warning in JS console:
SEC7112: Script from [URL] was blocked due to mime type mismatch