[NTG-context] \placecontent doesn't place content after \chapter{}

The code below displays the "Contents" chapter header; however, the table of contents is not shown. If I remove the \chapter{Contents}, then the table of contents is displayed. What's wrong? \starttext \chapter{Contents} \placecontent \chapter{One}\input tufte \chapter{Two}\input tufte \chapter{Three}\input tufte \stoptext Thanks, Bart