~/.config/autostart/telegramdesktop.desktop:
[Desktop Entry]
Version=1.0
Name=Telegram Desktop
Comment=Official desktop version of Telegram messaging app
TryExec=/home/remco/.local/share/Telegram/Telegram
Exec=/home/remco/.local/share/Telegram/Telegram -autostart
Icon=telegram
Terminal=false
StartupWMClass=TelegramDesktop
Type=Application
Categories=Chat;Network;InstantMessaging;Qt;
MimeType=x-scheme-handler/tg;
Keywords=tg;chat;im;messaging;messenger;sms;tdesktop;
X-GNOME-UsesNotifications=true
Telegram autostarts hidden in the system tray.
Sometimes the expected, sometimes what is shown in this screenshot:

Operating system: Pop_OS! 19.10
Version of Telegram Desktop: 1.9.19 beta
Used theme: Custom
i am quite sure this is duplicate
ok, it's duplicate of one ancient ticket i closed after asking if it's still valid, i leave this open.
https://github.com/telegramdesktop/tdesktop/issues/512
this issue is still valid on 2.1.8?
this issue is still valid on 2.1.8?
Yes, I fighting with this, but the fix breaks tdesktop on Windows (client just crashed on start) and I don't know how to debug on Windows...
After nog having encountered the issue for months, I just ran into the problem after pressing the _Upgrade Telegram_ button to upgrade to version 2.2.
Hey there!
This issue will be automatically closed in 7 days if there would be no activity. We therefore assume that the user has lost interest or resolved the problem on their own.
Don't worry though; if this is an error, let us know with a comment and we'll be happy to reopen the issue.
Thanks!