Fixed upstream. I put this patch into debian/patches and built deb packages, and then confirmed the UI are correctly shown in Japanese by Takao font.
** Patch added: "add-fontdefs-takao.diff" https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/716278/+attachment/1842526/+files/add-fontdefs-takao.diff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/716278 Title: UI unreadable with Japanese language pack -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs