Board Thread:Support Requests - Getting Technical/@comment-25389429-20141121024144/@comment-452-20141123022407

If you still included the template on the template page, then it would still add the category to the template.

Including the "body" template on the template page instead of including the template itself would indeed sidestep the problem, since the body template does not include the category.

Edit: the main purpose of my previous comment was to explain to you why Inuse and Splitsection were not affected.