Hi Jimmy Conway
When you click the tag(technical-file) then you will see all post related to this tag(technical-file). And you will see the title of the tag, not the post title because you are going the tag (technical-file) see the screenshot http://prntscr.com/qk35f2.
But when you go to the single view of the post(The Technical Documentation) then you will see the title of the post on the page header see the screenshot http://prntscr.com/qk353z.
I hope you understand.
Thanks,
ThemeArile