I get the above warning 18 times on the console and in .xsession-errors every time I open calc.
How do I find the bad style tag that is causing the warning? I want to stop this warning by fixing it.
This is a brand new install of Libreoffice, not even customized yet
soffice --calc --safe-mode
# warning: parent <office:styles> does not have any rules defined (child: <style:style>)