Thank you for contacting us.
This is known issue in version Q2 2014 SP1 (2014.2.715). In Q3 2014 the PDFProcessing library moved from CTP to Beta and the issue was fixed. You can upgrade to our latest version to avoid it.
I attached my sample demo project and video which demonstrates you the behavior in both versions.
Should you have further questions, I would be glad to help.
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