After upgrading to version 1.13.159cb1b1d, the icon in the system tray disappeared. It is not displayed when the program is running, although all settings are made. I followed the recommendations to open/close the program, it doesn’t help
For those still experiencing tray icon issues – Mailspring 1.17.4 was just released and includes two relevant fixes: the tray icon was sometimes not initialized on app launch, and would appear invisible or as three dots “•••” for a long time before switching to the right icon.
There is also now proper dark/light system tray icon support on Linux (#2602). This should help with visibility across both light and dark desktop themes. Please update and let us know if your tray icon is now displaying correctly!
For anyone still experiencing tray icon issues on Linux, Mailspring 1.18.0 includes a fix for tray icon theme detection on GNOME/Unity desktops (#2610). Combined with the dark/light icon support and initialization fixes in 1.17.4, tray icon behavior should be much more reliable now.