Comment 2 for bug 958523

StacktraceTop:
 g_assertion_message (domain=<optimized out>, file=<optimized out>, line=<optimized out>, func=0x7f3bc3f0d7b0 "gtk_file_system_model_sort", message=0x5bccf50 "assertion failed: (r == n_visible_rows)") at /build/buildd/glib2.0-2.31.20/./glib/gtestutils.c:1860
 g_assertion_message_expr (domain=0x7f3bc3eea1bd "Gtk", file=0x7f3bc3f0d2d0 "/build/buildd/gtk+3.0-3.3.18/./gtk/gtkfilesystemmodel.c", line=751, func=0x7f3bc3f0d7b0 "gtk_file_system_model_sort", expr=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gtestutils.c:1871
 gtk_file_system_model_sort (model=0x548eca0) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkfilesystemmodel.c:751
 gtk_file_system_model_sort (model=0x548eca0) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkfilesystemmodel.c:706
 _gtk_file_system_model_update_file (model=0x548eca0, file=0x5804c40, info=0x7f3b9812b410, requires_resort=1) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkfilesystemmodel.c:1816