Empty "code" block can be resized with customer's patching level and this behavior is fixed in SP 11.
- Start up a clean 6.2 EE bundle.
- Login the portal and navigate to Admin > Site Administration > Content > Message Boards and choose to "Post New Thread".
- Click in the body field and click on "<>", which is the code format button.
Expected Result: The code format's box cannot be resized.
Actual Results: The code format's box can be resized.