I hope that my indication will be useful to other users as well.
Thanks a lot!!
]]>Remmina tray icon look in Linux Mint 19.3
Remmina tray icon look in Arch Linux
Launching remmina from terminal:
Load modules from /usr/lib/remmina/plugins
Failed to load plugin: /usr/lib/remmina/plugins/remmina-plugin-spice.so.
Error: libspice-client-gtk-3.0.so.5: cannot open shared object file: No such file or directory
Remmina plugin glibsecret (type=Secret) has been registered, but is not yet initialized/activated. The initialization order is 2000.
Failed to load plugin: /usr/lib/remmina/plugins/remmina-plugin-vnc.so.
Error: libvncclient.so.1: cannot open shared object file: No such file or directory
The glibsecret secret plugin has been initialized and it will be your default secret plugin
StatusNotifier/Appindicator support: your desktop does support it and libappindicator is compiled in Remmina. Good.
(org.remmina.Remmina:8683): Gtk-WARNING **: 12:06:03.729: gtk_menu_attach_to_widget(): menu already attached to GtkMenuItem