Font display bug? N is t drawn backwards. rdesktop 1.5.0 on Debian etch.

I'm using rdesktop 1.5.0 (from the Debian 1.5.0-2 package.)

The rest of my Debian installation is 'etch', and I'm using Xorg:
X Window System Version 7.1.1
Release Date: 12 May 2006
X Protocol Version 11, Revision 0, Release 7.1.1
...
(--) Chipset ATI Radeon IGP330M/340M/350M (U2) 4337 found


My problem is that some characters appear backwards. For example, N
and t both appear to be reversed. If I copy and paste (within the
rdesktop session) one of these letters, the new copy is the correct
way around.

I've taken a screenshot to try and help explain:
http://s3.amazonaws.com/zanu.org.uk/font-bug.png

Everything seems normal apart from that. I've tried with various
rdesktop options such as -4, -5 and without -z, and with -b. Colour
depth (-a) also makes no difference.

Has this been seen before? I found a report from 2000, 
http://www.rdesktop.org/archive/2000/msg00050.html but those letters
are missing, not backwards.

Regards,

 Nick

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