Solved! Go to Solution.
I found another better solution, run Talend like this:
$ GTK2_RC_FILES=/usr/share/themes/Adwaita/gtk-2.0/gtkrc Talend
where GTK2_RC_FILES= <path to gtkrc theme> Talend= <path to the talend binary>
ok, solution found.
The problem is the oxygen-gtk theme in KDE/openSUSE13.1.
To solve in KDE: System Settings -> Application appearance -> GTK and select a theme that is not oxygen-gtk for GTK2.