Confirmed, the "&" character isn't correctly escaped, you can see an error message in $HOME/.xsession-errors:
(xfce4-panel:3925): Gtk-WARNING **: Failed to set text from markup due to error parsing markup
etc...
In the meantime, use "&" instead of "&", it should correctly display a "&".
Confirmed, the "&" character isn't correctly escaped, you can see an error message in $HOME/. xsession- errors:
(xfce4-panel:3925): Gtk-WARNING **: Failed to set text from markup due to error parsing markup
etc...
In the meantime, use "&" instead of "&", it should correctly display a "&".