I did some tests today: - removed/reinstalled OO 3.1 from RPM => did not solve the problem - updated /usr/share/applications/defaults.list as per Janez advice => did not solve the problem Interestingly I have this issue with ODT files but not with ODS (spreadsheets) files. I'll keep digging (maybe on a clean virtualized install) and let know here (any ideas still welcome!)