Hello again,
Spark 3.1.0 dated 20/7/2026, (and all the 3.1.0 versions we have tried) the spark icon that shows you got message on system tray does not go away.
I think the way to reproduce it is: With spark window (the one with the contact list etc) OPEN (not closed in system tray), you get a message, click on the window to check the message, close the window, the icon stays with the envelope.
If just the message pops up and spark is closed, the envelope goes away as it should