The customer reports and I've verified a subtle difference be Ghostscript and Acrobat Reader 8.0 in rendering the attached PDF file (see screenshot.png for details). The command line I'm using for testing: bin/gs -sDEVICE=ppmraw -o test.ppm ./2617_Perspektive_Pforte_01_tra.pdf The customer reported this issue with 8.61, and I've duplicated it with 8.54, 8.61, and head (r8536).
Created attachment 3803 [details] screenshot.png
Created attachment 3804 [details] 2617_Perspektive_Pforte_01_tra.pdf
This PDF file has optional contents, which Ghostscript doesn't yet implement and displays everything. Acrobat 5, which doesn't know about the optional content displays the same picture as Ghostscript. Removing /OCProperties entry makes Acrobat 8 display the same picture.
*** This bug has been marked as a duplicate of 689289 ***
Changing customer bugs that have been resolved more than a year ago to closed.