Report Builder: Section Border lines broken

Report Builder: Section Border lines broken

I really like the Report Builder for generating organized reports. However, I am frustrated that I am having problems with using a border around sections.

When displayed in the browser it looks fine with neat lines around each section. But when I go to print or save as PDF the lines are sometimes broken or have an inconsistent thickness in certain places. It seems wherever I have a label on the left with a white background it somehow interferes with the borderline which is supposed to go around it. But what's strange is sometimes it works perfectly and it's not consistent when and where the breaks do occur.

Attached is a sample of the broken lines.

I would really like to fix this. I like using the border to organize the report but the broken line looks so unprofessional.

Thank you,

Aimee