telegram-desktop installed via
pacman on the Arch Linux.
After starting – no systray’s icon present and thus can’t see new messages and even can’t exit in a normal way.
This issue is not specific for the Arch Linux and happens on any Linux systems.
Go to the Google and make search with “telegram linux no systray” – the very first result will lead you to the 2017’s year discussion on the Github.
So the solution is just to install the
$ sudo pacman -S sni-qt
$ ps aux | grep tele setevoy 3754 0.2 2.0 2382584 331040 tty1 Sl Feb26 13:58 telegram-desktop $ kill 3754
$ telegram-desktop QApplication: invalid style override passed, ignoring it. Available styles: qt5ct-style, Windows, Fusion (process:21848): Gtk-WARNING **: 12:03:52.331: Locale not supported by C library. Using the fallback 'C' locale.