If you open the <sub> tag and forget to close it in a question's text, it will render text as subscript in the preview zone, but not on the actual question's page.

For instance, this text renders as subscript from the preview zone.

  • 4
    Incorrect HTML is incorrect...
    – Shog9
    Commented Oct 19, 2010 at 2:04
  • @Shog9 Of course it isn't.
    – zneak
    Commented Oct 19, 2010 at 2:31

1 Answer 1


We have changed the preview to work more like the server-side version when handling invalid markup, so after the next build, the preview of your post will look like the final version.

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