What you've uploaded is a screenshot, not a .xar file that you're working on so others can see if they can help you. If you don't want to upload it in a public arena then please send the file to the support team
I've had a look at trying to reproduce the problem you've seen (as far as I can without seeing what exactly you have done) and think I can see the problem you're having.
1. Are you exporting the PDF as High Quality PDF?
2. If you change the zoom level in the exported PDF does this change at all?
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