I’m running out of options as there is no definite answer for this.
My only alternative is to try to make Calc auto-wrap text by default. When I say by default, it means every time I open a new Calc supported file format, auto-wrap is enabled for all cells. Because converting an XLSX document produced by xlsxwriter to PDF file from a Linux headless server (even though I specifically set auto-wrap in xlsxwriter) is producing PDF document with overlapped text.