Unity global toolbar is not updated after Clementine is activated

I am using Clementine music player which normally hides its window when close button is pressed and shows it back when it is activated through tray icon or menu shortcut. Problem is Unity top toolbar still shows actions of previously focused windows action after Clementine is activated. For example if open Clementine and then try to close it using the window close button at the left of the toolbar, another windows is closed.
Steps to produce;
1- Open Clementine, make it fullscreen
2- Close Clementine so that it will run in background
3- Open another window
4- Open Clementine's window again
5- Use close button on the top left corner (Problem happens here; Toolbar on the top still shows actions of previous window.)
6- Other windows is closed instead of Clementine

This is a tiny little rare bug yet annoying. Sometimes I accidentally close necessary windows.
I am using Ubuntu 12.10 and Unity version 6.10.0