Thread:FireworksandChimpanzees/@comment-12933939-20130728213236/@comment-5691231-20130728214852

Pages that contain complex code restrict Visual Editor from being used.

I don't think there's any option for it unless removing the possible coding from the page. But it isn't recommended since Signatures and some templates need this to work.

This is also the reason why you need to use Source Mode on most talk pages.