diff --git a/0001-x11-Map-mimetypes-back-to-selection-atoms.patch b/0001-x11-Map-mimetypes-back-to-selection-atoms.patch
new file mode 100644
index 0000000..5e5e9ff
--- /dev/null
+++ b/0001-x11-Map-mimetypes-back-to-selection-atoms.patch
@@ -0,0 +1,40 @@
+From 5c1be2233de15c7bb18bbb32b8071b78e992a0c5 Mon Sep 17 00:00:00 2001
+From: Carlos Garnacho <carlosg@gnome.org>
+Date: Sat, 12 Oct 2019 19:15:11 +0200
+Subject: [PATCH] x11: Map mimetypes back to selection atoms
+
+This may be seen as the missing half of
+https://gitlab.gnome.org/GNOME/mutter/merge_requests/842. Now that we
+translate some atoms to better known mimetypes, we should also translate
+those mimetypes to the underlying atoms if we might have added them.
+
+Fixes c&p from certain X11 clients.
+
+Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/854
+---
+ src/x11/meta-selection-source-x11.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/src/x11/meta-selection-source-x11.c b/src/x11/meta-selection-source-x11.c
+index 1a0369ab0..55e500327 100644
+--- a/src/x11/meta-selection-source-x11.c
++++ b/src/x11/meta-selection-source-x11.c
+@@ -82,6 +82,15 @@ meta_selection_source_x11_read_async (MetaSelectionSource *source,
+   task = g_task_new (source, cancellable, callback, user_data);
+   g_task_set_source_tag (task, meta_selection_source_x11_read_async);
+ 
++  if (strcmp (mimetype, "text/plain") == 0 &&
++      g_list_find_custom (source_x11->mimetypes, "STRING",
++                          (GCompareFunc) g_strcmp0))
++    mimetype = "STRING";
++  else if (strcmp (mimetype, "text/plain;charset=utf-8") == 0 &&
++           g_list_find_custom (source_x11->mimetypes, "UTF8_STRING",
++                               (GCompareFunc) g_strcmp0))
++    mimetype = "UTF8_STRING";
++
+   meta_x11_selection_input_stream_new_async (source_x11->x11_display,
+                                              source_x11->x11_display->selection.xwindow,
+                                              gdk_x11_get_xatom_name (source_x11->xselection),
+-- 
+2.21.0
+
diff --git a/mutter.spec b/mutter.spec
index 2a40edd..5497fd2 100644
--- a/mutter.spec
+++ b/mutter.spec
@@ -8,7 +8,7 @@
 
 Name:          mutter
 Version:       3.34.1
-Release:       2%{?dist}
+Release:       3%{?dist}
 Summary:       Window and compositing manager based on Clutter
 
 License:       GPLv2+
@@ -46,6 +46,11 @@ Patch11:       0008-wayland-Figure-out-better-the-right-selection-source.patch
 # Fixes issue with X selection buffers in Qt applications:
 # https://bugzilla.redhat.com/show_bug.cgi?id=1758873
 Patch12:       0001-x11-Translate-well-known-selection-atoms-to-mimetype.patch
+# https://gitlab.gnome.org/GNOME/mutter/merge_requests/849
+# Fixes a bug introduced by MR #842 above:
+# https://gitlab.gnome.org/GNOME/mutter/issues/854
+# https://bugzilla.redhat.com/show_bug.cgi?id=1758873#c28
+Patch13:       0001-x11-Map-mimetypes-back-to-selection-atoms.patch
 
 BuildRequires: chrpath
 BuildRequires: pango-devel
@@ -190,6 +195,9 @@ desktop-file-validate %{buildroot}/%{_datadir}/applications/%{name}.desktop
 %{_datadir}/mutter-%{mutter_api_version}/tests
 
 %changelog
+* Sun Oct 13 2019 Adam Williamson <awilliam@redhat.com> - 3.34.1-3
+- Backport MR #849 to fix bug introduced by MR #842
+
 * Sat Oct 12 2019 Adam Williamson <awilliam@redhat.com> - 3.34.1-2
 - Backport multiple fixes for F31 FE/blocker bugs:
   MR #832 for #1749433 (also needs change in gnome-shell)