I have reproduced this problem at my end and logged it as PDFKITNET-24797 in our issue tracking system. Our team will investigate it in detail and you’ll be updated via this forum thread once it is resolved.
As you know, this issue was logged recently, our team still needs to investigate it in detail. However, I have asked our team to share the ETA of this issue. You’ll be updated with the response as soon as possible.
Our team has further investigated this issue and I would like to share with you that the fix for this issue will be available at the end of June 2011. You’ll be notified via this forum thread once it is resolved.