It's a Firefox (Mozilla) issue. The solution is rather well-defined, there is need for a developer to implement it.
** Bug watch added: Mozilla Bugzilla #69230 https://bugzilla.mozilla.org/show_bug.cgi?id=69230 ** Also affects: firefox (upstream) via https://bugzilla.mozilla.org/show_bug.cgi?id=69230 Severity: Unknown Priority: Unknown Status: Unknown ** Changed in: Ubuntu Sourcepackagename: None => mozilla-firefox ** Bug 45105 has been marked a duplicate of this bug -- keyboard shortcuts when keyboard set to non-english language https://launchpad.net/bugs/2561 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs