Merge branch 'master' into 'master'

Fix selection

See merge request sane-project/frontends!17

src/preview.c

@@ -1182,6 +1182,7 @@ expose_handler (GtkWidget * window, cairo_t *cr, gpointer data)
   cairo_paint(cr);
   g_object_unref(pixbuf);
 
+  if (p->selection_drag == FALSE)
   	update_selection (p);
   draw_selection (p, cr);