It's not just required for CJK documents. I have come across other bug reports with incomplete/incorrect text rendering which were fixed by installing poppler data. I can't find any of them at the moment, presumably because they are marked Fix Released.
I probably closed some of them myself. How can I view bugs which I am subscribed to but have marked Fix Released? -- Install poppler-data for CJK languages https://bugs.launchpad.net/bugs/623825 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs