Missing Borders

Problem:
We have noticed for some of our reports that the borders are missing in DOCX export and the same is rendered fine in the PDF format. Moreover, the behavior seems to be band-specific, as when we use the border in the Title band instead of the Background band, the borders are seen correctly in the .docx format as well. What could be the issue here?

Cause:
The cause for this can vary based on the report design. A probable cause for this could be overlapping elements when using the borders in the Background band.

Solution:
The DOCX exporter (and other exports such as Excel, CSV, etc) does not support overlapping elements. It is recommended to design the report such that the elements of the report are not overlapping.

Additionally, instructions on overlapping elements and suggestions on how to design a report accordingly can be found at the below link:
https://community.jaspersoft.com/wiki/making-html-xls-or-csv-friendly-reports
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Ref. Case #02198536