Today I've noticed that system tray doesn't show application icons, for example, Viber, Skype, Software update.
- to reboot
- to reinstall Skype
- to run Skype and Viber from command line hoping I would see an error (something like permission problem)
- to create a new user and check with it - application icons do appear then in new user session
I don't know what else to check.
Linux Mint 17.3 Rosa 64-bit (Cinnamon).