Okay... I was using gnome-shell for the first time and don't know exactly the normal behaviour of windows in it. But it seems to be no problem in it.
What I have done:
1. Opened boinc-manager in a full view.
2. Opened Nautilus, Writer, qBittorent.
3. Minimized boinc-manager by clicking on a "close" button in the right up corner.
4. Switched to another windows and started to close them.
Boinc don't came up.
But in Unity there is a problem.
About your personal drop... It won't work? Or why you removed it?
Okay... I was using gnome-shell for the first time and don't know exactly the normal behaviour of windows in it. But it seems to be no problem in it.
What I have done:
1. Opened boinc-manager in a full view.
2. Opened Nautilus, Writer, qBittorent.
3. Minimized boinc-manager by clicking on a "close" button in the right up corner.
4. Switched to another windows and started to close them.
Boinc don't came up.
But in Unity there is a problem.
About your personal drop... It won't work? Or why you removed it?