Liliana Marie Prikler schreef op za 19-02-2022 om 16:05 [+0100]:
> +          (add-after 'unpack 'fix-settings-crash
> +            (lambda _
> +              (substitute* "src/mumble/AudioConfigDialog.cpp"
> +                (("updateEchoEnableState\\(\\) \\{" all)
> +                 (string-append all
> +                                "if (!AudioInputRegistrar::qmNew) return;")))))

At first sight, this seems a bug in the source code to me,
also relevant to other distros, so I would do this in an origin
snippet and submit it upstream.

Greetings,
Maxime.