console shows:
Gtk:ERROR:/build/buildd/gtk+3.0-3.4.2/./gtk/gtkstylecontext.c:739:timeline_finished_cb: assertion failed: (info != NULL)
console shows:
Gtk:ERROR: /build/ buildd/ gtk+3.0- 3.4.2/. /gtk/gtkstyleco ntext.c: 739:timeline_ finished_ cb: assertion failed: (info != NULL)