Theorytabs sometimes have section with no name

Some theorytabs such as these:

have no section names. This makes it impossible to edit or view the page history as it will appear blank and not be clickable at the bottom of the page. What causes this and is it possible to revert the section name back?

Thank you very much for reporting this. One thing I find funny is that there are two contributors but no way to edit the song without the section name. We’ll get to the bottom of this.

you can edit it with inspect element, or i think they edited the song before it got corrupted

Yes, that sounds plausible to me, too.