Messed Up Line JasperReports Server v6.2.1

I made a report with TIBCO Jaspersoftstudio 6.2.1. When in the TIBCO Jaspersoftstudio 6.2.1 tools preview and it's all fine.

After I deploy to JasperReports Server 6.2.1, the line look messed up. But, after I export to PDF everything okay.

What I need the look will be neat, and same, either JasperReports Server nor export to PDF.

Is there any solution for this case?

I give you a screenshot, for what I mean..