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When exporting a report as a PDF from either Power BI desktop or via a Subscription on Power BI Service all tables and matrixs show some cell outlines for column headers.
The only border that should be present is the column header bottom border.
These lines do not show in Power BI Desktop or Power BI service when viewing the report.
Hi @Smiggle ,
Exporting to PDF does not guarantee the accuracy of Power BI reports.Yon can refer to:Export reports to PDF - Power BI | Microsoft Learn
Hope it helps!
Best regards,
Community Support Team_ Scott Chang
If this post helps then please consider Accept it as the solution to help the other members find it more quickly.
If you have a Pro license you can open a Pro ticket at https://admin.powerplatform.microsoft.com/newsupportticket/powerbi
Otherwise you can raise an issue at https://community.fabric.microsoft.com/t5/Issues/idb-p/Issues .