The customer reports part of the spiral in fts_4606 is missing. See screenshot.png. Command line: xpshead -sDEVICE=png16m -o test_%d.png ./fts_46xx.xps
I found the source of this one. Should have a fix shortly.
Fixed with http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=856eedc584a224bd311fa7688fc29ba487521dfb. Problem was a space for before the closing quote on stroke_dash_array_att