[Groff] pdfroff doubles the output

[Louis Guillaume]

Hello,

I have just started to use the pdfmark macros along with -ms and 
pdfroff. It appears that the output is doubled. The resulting pdf has 
the contents twice.

The document is rendered correctly with plain-old groff, but of course 
none of the pdfmark stuff works without that pdfroff.

Is this a known bug? Or am I doing something wrong. This is the invocation:

$ pdfroff -tp -ms -m pdfmark --report-progress lipsum.ms > a.pdf


The file contains several .pdfbookmark requests and a .pdfsync at the 
end. Other than that, just plain old ms markups.

Any help would be great...

Louis