Hello. Thank you for reporting this issue. I will try to re-create it on my machine, but it would help me a lot, if you could help me understand it better.
Could you please try printing some PDF in the correct way, as well as the same file printed through ASB so I can compare them? Also, it would help, If you could add a screenshots of highlighted line correctly and incorrectly. I hope that will help us identify and fix the issue soon.