cannot alter 'to' addess in email on 8.0

[Pete French]

Only just noticed this, but there seems to be a small, but annoying,
pieece of breakage in email under 8.0

try and send a simple piece of email, type a few lines, then
use '~h' to try and change the 'to' header (or any of them actually).
what you get is a set of blank headers, instead of the original values
to edit. It also doesnt always seem to hold any values typed in, as
I foudn this out by having two bits of email dumped after trying
to edit the 'to' headers. have not been able to reproduce that reliably
though :-(

-pete.