Comment 3 for bug 1253913

I think I possible founding what the real problem, very crazy if this is real true, please confirm my test result in GNOME Shell:
If unity-gtk3-module and unity-gtk2-module installed a system (this is the case with basic installation), and the actual session is not Unity, the F10 key press blocking the proper module for example with following apps:
gnome-terminal, Pidgin, Totem.
I don't no what other applications are affected, I found this applications already this issue.
I removed this two packages with sudo apt-get purge unity-gtk3-module unity-gtk2-module command.
After the packages removed and I logout and log in again, the F10 key press again presenting main menu with gnome-terminal, Totem, Pidgin applications.
How can possible fixing this issue without lost functionality in Unity environment, but other sessions works right the F10 key with all applications without need defining blacklist scheme and adding all affected applications?
I no, Ubuntu default session is Unity, but I think need fixing this issue to all other sessions works right the F10 key press with other sessions.
This bug affecting bigger for example visually impaired users with have possibility only to use keyboard and screen reader.

Attila