[NTG-context] hbox after \page[disable]

[Michael Eidenbenz]

I have a doublesided layout. 
On the right side i place the text, figures (if i have any) go on the left side.
the MWE below works quite nice.

But if i want the figure to be full height, two pages are skipped.
This is becaus the hbox right below of the figure.
I think it is placed during the \page[disable] pass. 

What can I do to avoid this hbox?

Thanks Michael


\enabletrackers 
[visualizers.hbox]

\useMPlibrary[dum]

\setuppagenumbering
 [alternative=doublesided]

\definelayout[odd][width=10cm]
\definelayout[even][width=15cm]

\newtoks \EvenPage

\appendtoks
\the\EvenPage
\global\EvenPage\emptytoks
\page[odd]
\to\everyafteroutput

\unexpanded\def\Figure#1{%
  \appendtoks
  \page[even]
  #1
  \page[disable]
  \to\EvenPage}
 
\showframe

\starttext

\dorecurse{4}{\input{tufte}\par}\page
\Figure{\externalfigure[dummy][factor=fit]}
\dorecurse{4}{\input{knuth}\par}\page
\Figure{\externalfigure[dummy][height=\textheight]}  %
\dorecurse{8}{\input{ward}\par}
\stoptext