Comment 1 for bug 2011352

Temporary solution in sakura.conf:

use_fading=true
urgent_bell=No

I see problem here:

sakura_focus_in_cb (GtkWidget *widget, GdkEvent *event, void *data)
{
...
 if (!sakura.use_fading) return FALSE;
...
}

If "use_fading=false", then "sakura_focus_in_cb" returns BEFORE "gtk_window_set_urgency_hint".
But still need to minimize-maximize or resize the window for stoping blinks, therefore finally drowned out with "urgent_bell=No".