I need to display a table of contents, but only displaying chapters.

Here is my minimum working example:

\starttext

   \startfrontmatter
       \startchapter[title={Contents}]
           \placelist[chapter]
       \stopchapter
       \completecontent
   \stopfrontmatter
   \startbodymatter
   \startchapter[title={Title 1}]
                \input knuth
        \stopchapter
        \stopbodymatter

\stoptext

For reasons I don't understand, both \placelist[chapter] and \completecontent display the title, but are otherwise empty of contents. I believe the code was working before an update. I used ConTeXt live though and confirmed this code even doesn't work there.

Why isn't it rendering the table of contents?

--Joel