bug#44219: email for some reason does not activate

[Jean Louis]

I was inspecting helm.sh in helm sources and on this↓ place
## Copyright (C) 2012 ~ 2019 Thierry Volpiatto <thierry.volpiatto📧gmail.com>

there is error:
hypb:error: (Hyperbole Assist Key): No action defined for this context; try 
another location

I have replaced @ with emoji there. I cannot see which character there
is different from expected one, if I write the same email address
myself, then it works. If I do action key on the above one it does
not.

-- 
Thanks,
Jean Louis

I use:  Editor:      GNU Emacs 28.0.50 (build 21, x86_64-pc-linux-gnu, X 
toolkit, cairo version 1.14.8, Xaw3d scroll bars)

        Hyperbole:   7.1.3
        Sys Type:    x86_64-pc-linux-gnu
        OS Type:     gnu/linux
        Window Sys:  x
        News Reader: Gnus v5.13