Session behavior creates problems in workflow. There should be a way to close Shutter and for it to actually close.
As every app, you can exit Shutter completely via File > Quit, the shortcut Ctrl+Q or via the systray context menu. Does this not work for you?
Bug watches keep track of this bug in other bug trackers.
As every app, you can exit Shutter completely via File > Quit, the shortcut Ctrl+Q or via the systray context menu. Does this not work for you?