i don’t know if it’s a TikZ or a ConTeXt bug, but with the newest mkiv beta installed with mtx-update.lua, tikz fails when using the option “text badly centered” in combination with “text width”:<br><br>\usemodule[tikz]<br>
\starttext<br>\tikz\node[text badly centered, text width=1cm]{fail};<br>\stoptext<br><br>gives:<br><br>\tikz@text@action ...p =0pt\rightskip \@flushglue <br>                                                  \leftskip \@flushglue \relax<br>
...<br><br>as it doesn’t occur with LaTeX, i think it might be a ConteXt bug.<br>