How to remove borders from spreadsheet pdf and print?

I have tried in Format>Page>Borders, I have tried in Border=None from tool bar, I have tried in Print settings, I have tried to make Borders “white” (auto returns to “black”) I’m missing something. Please help and thank you.

Could you please upload an anonymized file (any dummy data should be sufficient).

I noticed this too. Libreoffice draw was associated with pdfs. Once I opened it with another pdf viewer, it was gone.