unfocus on slow sloppy monitor focus

dwm.c

@@ -1212,6 +1212,7 @@ motionnotify(XEvent *e) {
 	if(ev->window != root)
 		return;
 	if((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
+		unfocus(selmon->sel, True);
 		selmon = m;
 		focus(NULL);
 	}