As far as I understand, what you are seeing is upstream ticket #11736, that will be fixed in 2.3.5. For more details, see https://www.lyx.org/trac/ticket/11736
** Bug watch added: www.lyx.org/trac/ #11736 http://www.lyx.org/trac/ticket/11736 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875909 Title: LyX can't build PDFs / missing begin document To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lyx/+bug/1875909/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs