minimal code:
===============================================
\setuppagenumbering[alternative=doublesided]

\starttext

\startstandardmakeup
TITLE
\stopstandardmakeup

\startfrontmatter
  \chapter{Preface}
  \completecontent[criterium=all]
\stopfrontmatter

\stoptext
===============================================
The page number of the preface chapter shown in the table of contents is 0
in my recent ConTeXt:
context -version

mtx-context     | ConTeXt Process Management 0.60
mtx-context     |
mtx-context     | main context file:
/opt/context/tex/texmf-context/tex/context/base/context.mkiv
mtx-context     | current version: 2014.01.11 23:58


I'm currently fine with that feature but


-- 
Best Regards
Chen