Switch language shortcut bug [ubuntu 14.04 Gnome]

I use 2 languages: english and russian.

Languages ​​normally switched on using the taskbar

When using the keyboard shortcut icon changes its notation to another language BUT the language set does not change.

How fix this problem?

The solution for the same problem which worked on Gnome 15.04 is a workaround from here. So on 14.04 use at your own risk:

gsettings set org.gnome.desktop.input-sources xkb-options "[]"
gsettings set org.gnome.desktop.wm.keybindings switch-input-source "['<Alt>Shift_L']"
gsettings set org.gnome.desktop.wm.keybindings switch-input-source-backward "['<Alt>Shift_R']"

Go to Systems Settings -> Text Entry -> under Input sources to use: click Russian. Then click the little keyboard icon to open the Russian window and display the Russian keyboard layout. Is the Russian keyboard layout displayed in the Russian window? If the Russian keyboard layout isn't displayed in the Russian window, you can add it by clicking on the plus button (+) to open the Choose an input source window, selecting the Russian language from the list of keyboard input languages, and then clicking the Add button to add the Russian keyboard layout.

If this doesn't work, then there is another possibility. Did the Panel language switcher icon work properly in the beginning? If so, did you ever have boot problems with your computer and then used the startx command to start the X.Org X Window System?