Hi Eli,

> Can you invoke ps-print-buffer with C-u to print to a file from each
> of the Emacs versions, and then diff them and post the results here?

Sure. See below. It seems that in e23 in the generated postscript code
several numerical values use a ',' as decimal separator, in e21 or e22
it is a '.' which is correct in postscript. The first of that values is
with /LandscapePageHeight.

e22: /LandscapePageHeight 841.8897637795276 def
e23: /LandscapePageHeight 841,8897637795276 def

I used exactly the same environment for the three emacsen.

Regards,
Christoph