Disabled tables lines and grid still visible in the PDF export

Version: 24.2.7.2 (X86_64) / LibreOffice Community
Build ID: 420(Build:2)
CPU threads: 8; OS: Linux 6.12; UI render: default; VCL: gtk3
Locale: de-DE (de_DE.UTF-8); UI: en-US
Gentoo official package
Calc: threaded

Hello, I have a table in the header, disabled all lines and grid lines, looks good in the odt preview. But in the PDF the grid is always visible as thin white lines.

I also tried to add a grid in the same blue color like the background, but still visible in the PDF export. What can I do?
TEST_02.odt (16.4 KB)
TEST_02.pdf (31.3 KB)

Neithe I can’t export without the white lines.

  • May be a bug

A work arround can be that you hide the Boundaries, capture the table as an image and replace the table with that image

I got a workaround. I learned that there are cell and table backgrounds. I have set cell and table background now to the same background color, that solved the issue.

However the bug is, that the odt preview differs from PDF export when having only cell backgrounds set.