Sorry for the lack of feedback until now, Miikka. I can reliably reproduce the issue with libreoffice 6.0.6 on Ubuntu 18.10 and libreoffice 6.1.0.3 installed as a snap.
At a first glance this looks like an upstream issue to me. Would you mind filing a bug report at https://bugs.documentfoundation.org/enter_bug.cgi?product=LibreOffice&format=guided (if there isn't one already) and linking to it here so we can track its resolution? Thanks! ** Bug watch added: Document Foundation Bugzilla #103099 https://bugs.documentfoundation.org/show_bug.cgi?id=103099 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1772430 Title: Proportional line spacing under 100 % makes first line too low in LibreOffice Writer To manage notifications about this bug go to: https://bugs.launchpad.net/df-libreoffice/+bug/1772430/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs