Thanks for bugreport It is because Writer has no character "Horizontal line". Instead, used paragraph with enabled bottom border.
For remove unneeded horizontal lines: 1. Place text cursor on that line or select several lines 2. Format->Paragraph or right mouse click ->Paragraph 3. tab "Borders" 4. on top left on dialog "Paragraph" click first square, border disappears 5. click Ok. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/850710 Title: [Upstream] A line comes when I push enter in LibreOffice Writer To manage notifications about this bug go to: https://bugs.launchpad.net/df-libreoffice/+bug/850710/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs