The Thunderbird part in a duplicate of bug #1761844. Upstream Thunderbird says it will be fixed in version 60.
** Bug watch added: Mozilla Bugzilla #1390015 https://bugzilla.mozilla.org/show_bug.cgi?id=1390015 ** Also affects: thunderbird via https://bugzilla.mozilla.org/show_bug.cgi?id=1390015 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1779569 Title: 🌈 looks odd in thunderbird, chrome/chromium, okish in firefox To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/1779569/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs