[imp] Forward will not copy original info

[EB]

I am using CVS HEAD.

When I attempt to forward a particular mail, the compose window comes up empty
and none of the information from the original appears.

However, this only happens on email from one source when there is a PDF
attached.  I am able to forward mail from other sources with PDFs, and other
email from this source when there is no PDF attached.

Any idea what I can do to fix or further diagnose this?

Thanks!