Livesearch macro breaks templates

To replicate:

• Go to Global Templates, and create a template containing:

  h1. Test livesearch for @PROJ@
  {livesearch}
  

• Create a page using this template.
  After being prompted for the variable, Confluence returns to the edit page. But now you'll notice that the "Location" field is blank. Saving the page results in a "Page Not Found" error.