Please take a look at the very old bug <https://launchpad.net/bugs/491157>, which I fear is just as valid today. Suppose the problem would go away by switching to Noto Sans for Japanese.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1581160 Title: Switch to Noto Sans as default font for Japanese and/or Korean? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/language-selector/+bug/1581160/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
