The 9.10 editor showed fewer Content Block options when you edited a content block in context. The following images show a comparison of 9.00 SP2 and 9.10 SP1.

In version 9.10, was added to web.config , which limited editor menu functionality.

1. Edit siteroot/web.config .
2. Change the value of ExcludeEditorMenuItems to false .
   

3. Save web.config . You may need to clear cache for the change to take effect.