diff -upr mate-control-center/font-viewer/font-model.c mate-control-center-test/font-viewer/font-model.c

--- mate-control-center/font-viewer/font-model.c	2015-08-30 17:57:35.203194762 +0200

+++ mate-control-center-test/font-viewer/font-model.c	2015-08-30 17:52:45.067143000 +0200

@@ -274,8 +274,8 @@ ensure_thumbnails_job (GIOSchedulerJob *

         g_clear_object (&thumb_file);

         g_clear_object (&info);

-        g_io_scheduler_job_send_to_mainloop_async (job, one_thumbnail_done,

-                                                   thumb_info, NULL);

+        g_main_context_invoke (NULL, one_thumbnail_done,

+                               thumb_info);

     }

     g_list_free (thumb_infos);

@@ -398,8 +398,8 @@ load_font_infos (GIOSchedulerJob *job,

     if (g_cancellable_is_cancelled (cancellable))

         load_font_infos_data_free (data);

     else

-        g_io_scheduler_job_send_to_mainloop_async (job, font_infos_loaded,

-                                                   data, load_font_infos_data_free);

+        g_main_context_invoke_full (NULL, G_PRIORITY_DEFAULT, font_infos_loaded,

+                                    data, load_font_infos_data_free);

     return FALSE;

 }

diff -upr mate-control-center/font-viewer/sushi-font-loader.c mate-control-center-test/font-viewer/sushi-font-loader.c

--- mate-control-center/font-viewer/sushi-font-loader.c	2015-08-30 17:57:27.821117406 +0200

+++ mate-control-center-test/font-viewer/sushi-font-loader.c	2015-08-30 17:53:57.223902000 +0200

@@ -141,9 +141,7 @@ font_load_job (GIOSchedulerJob *sched_jo

   if (error != NULL)

     g_simple_async_result_take_error (job->result, error);

-  g_io_scheduler_job_send_to_mainloop_async (sched_job,

-                                             font_load_job_callback,

-                                             job, NULL);

+  g_main_context_invoke (NULL, font_load_job_callback, job);

   return FALSE;

 }