Help does not fix default print format issue in Calc.

[Sherburne]

I have version 5.4.3.2. In Calc, default lines mysteriously appear that render printing a spreadsheet impractical. Repeated use of the LO help procedure FAIL. If you can provide a precise step by step process to overcome this bug; it will be greatly appreciated.
Failing that, can I revert to an older version? Perhaps the version presently touted as an upgrade doesn’t have the issue quite new to my LibreOffice.

Thank You,

Sherburne

[hjek]

Click Format → Page, click on the Sheet tab, and within the Print section untick the Grid checkbox. That will hide the “default lines” on the printed spreadsheet.