2000px tall in Captivate stretches PDF export

When creating a decision tree in Captivate... the project came out being 2000px tall.

Export to PDF with that height, and the PDF gets stretched 50% skinnier.  The height is correct however.

Experiment with it...

• 1800 px tall is fine when exporting to PDF
• 2000 px tall stretches the heck out of the PDF image

Any thoughts?

Bug?