I downloaded it and it runs. It and it is using plenty of CPU, so I think it’s working properly. It has not downloaded previously generated blocks. Is that a bug or a new feature?
The system tray in Gnome is not very reliable. Sometimes an icon will disappear leaving no way to get back to the program. I have verified that this can happen with bitcoin. It would be nice if starting bitcoin while it’s already running would just bring up the GUI of the already running bitcoin process.