I have problems maximizing apps like aMSN which closes into tray when I press the close (x) button. In a usual Gnome I would call it from the tray, but Gnome3 does not have it.
So, how should I maximize (bring to front) apps in Gnome3 that can be restored only via clicking on its tray icon?
Any (well almost any) application that in previous versions minimised to the system tray notification area will still appear in the system-tray area of Gnome-Shell. The location though is not immediately obvious - it is in the bottom-right of the screen.
Move your mouse to the bottom-right to reveal this area - its an auto-hidden like panel. Just click on any of the apps in the system-tray to make them reappear.
As you have pointed out aMsn when minimised seemingly disappears - this happens in both Gnome-Shell and Unity.
To stop this magical disappearing trick you can edit the file /home/your_username/.amsn/[your_email]/config.xml, search for use_tray and change the value from 1 to 0
This still doesnt allow aMsn to minimise to the correct area in the shell - but aMsn does appear as an open window when you click the Activities menu.
Note in Unity - this trick allows aMsn to remain as an icon in the Launcher.
If you are not adverse to installing PPAs, then instead of the above you could install the classic-systray extension
sudo add-apt-repository ppa:webupd8team/gnome3
sudo apt-get update
sudo apt-get install gnome-shell-classic-systray
Logout and login and enable the classic-tray extension in gnome-tweak-tool.
Logout and login again. This time, aMsn when it minimises, appears in the top-bar as shown.
