diff --git a/libwnck3.spec b/libwnck3.spec
index dd5d159..48455cc 100644
--- a/libwnck3.spec
+++ b/libwnck3.spec
@@ -3,11 +3,13 @@
 Summary: Window Navigator Construction Kit
 Name: libwnck3
 Version: 40.0
-Release: 1%{?dist}
+Release: 2%{?dist}
 URL: http://download.gnome.org/sources/%{source_name}/
 Source0: http://download.gnome.org/sources/%{source_name}/40/%{source_name}-%{version}.tar.xz
 License: LGPLv2+
 
+Patch1:        libwnck_0001-Revert-pager-do-not-change-workspace-size-from-size_.patch
+
 BuildRequires: gcc
 BuildRequires: meson
 BuildRequires: gettext
@@ -36,7 +38,7 @@ developing applications that use %{name}.
 
 
 %prep
-%setup -q -n %{source_name}-%{version}
+%autosetup -n %{source_name}-%{version} -p1
 
 
 %build
@@ -70,6 +72,11 @@ developing applications that use %{name}.
 
 
 %changelog
+* Fri Jun 11 2021 Wolfgang Ulbrich <fedora@raveit.de> - 40.0-2
+- revert https://gitlab.gnome.org/GNOME/libwnck/-/commit/3456b74
+- fixes rhbz #1971048
+- and https://github.com/mate-desktop/mate-panel/issues/1230
+ 
 * Wed May 26 2021 Kalev Lember <klember@redhat.com> - 40.0-1
 - Update to 40.0
 - Tighten soname globs
diff --git a/libwnck_0001-Revert-pager-do-not-change-workspace-size-from-size_.patch b/libwnck_0001-Revert-pager-do-not-change-workspace-size-from-size_.patch
new file mode 100644
index 0000000..528f747
--- /dev/null
+++ b/libwnck_0001-Revert-pager-do-not-change-workspace-size-from-size_.patch
@@ -0,0 +1,98 @@
+From 89a5825eb20bfa91b91055e5a3dfe6445e6b9bd2 Mon Sep 17 00:00:00 2001
+From: raveit65 <mate@raveit.de>
+Date: Fri, 11 Jun 2021 21:26:40 +0200
+Subject: [PATCH] Revert "pager: do not change workspace size from
+ size_allocate"
+
+This reverts commit 3456b747b6381f17d48629dd8fdd4d511e739b10.
+---
+ libwnck/pager.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 59 insertions(+)
+
+diff --git a/libwnck/pager.c b/libwnck/pager.c
+index c769d62..a563a4d 100644
+--- a/libwnck/pager.c
++++ b/libwnck/pager.c
+@@ -122,6 +122,8 @@ static void     wnck_pager_get_preferred_height_for_width (GtkWidget *widget,
+                                                            int        width,
+                                                            int       *minimum_height,
+                                                            int       *natural_height);
++static void     wnck_pager_size_allocate (GtkWidget        *widget,
++                                          GtkAllocation    *allocation);
+ static gboolean wnck_pager_draw          (GtkWidget        *widget,
+                                           cairo_t          *cr);
+ static gboolean wnck_pager_button_press  (GtkWidget        *widget,
+@@ -247,6 +249,7 @@ wnck_pager_class_init (WnckPagerClass *klass)
+   widget_class->get_preferred_width_for_height = wnck_pager_get_preferred_width_for_height;
+   widget_class->get_preferred_height = wnck_pager_get_preferred_height;
+   widget_class->get_preferred_height_for_width = wnck_pager_get_preferred_height_for_width;
++  widget_class->size_allocate = wnck_pager_size_allocate;
+   widget_class->draw = wnck_pager_draw;
+   widget_class->button_press_event = wnck_pager_button_press;
+   widget_class->button_release_event = wnck_pager_button_release;
+@@ -684,6 +687,62 @@ wnck_pager_get_preferred_height_for_width (GtkWidget *widget,
+   *natural_height = *minimum_height = MAX (height, 0);
+ }
+ 
++static gboolean
++_wnck_pager_queue_resize (gpointer data)
++{
++  gtk_widget_queue_resize (GTK_WIDGET (data));
++  return FALSE;
++}
++
++static void
++wnck_pager_size_allocate (GtkWidget      *widget,
++                          GtkAllocation  *allocation)
++{
++  WnckPager *pager;
++  int workspace_size;
++  GtkBorder padding;
++  int width;
++  int height;
++
++  pager = WNCK_PAGER (widget);
++
++  width = allocation->width;
++  height = allocation->height;
++
++  _wnck_pager_get_padding (pager, &padding);
++  width  -= padding.left + padding.right;
++  height -= padding.top + padding.bottom;
++
++  g_assert (pager->priv->n_rows > 0);
++
++  if (pager->priv->orientation == GTK_ORIENTATION_VERTICAL)
++    {
++      if (pager->priv->show_all_workspaces)
++	workspace_size = (width - (pager->priv->n_rows - 1))  / pager->priv->n_rows;
++      else
++	workspace_size = width;
++    }
++  else
++    {
++      if (pager->priv->show_all_workspaces)
++	workspace_size = (height - (pager->priv->n_rows - 1))/ pager->priv->n_rows;
++      else
++	workspace_size = height;
++    }
++
++  workspace_size = MAX (workspace_size, 1);
++
++  if (workspace_size != pager->priv->workspace_size)
++    {
++      pager->priv->workspace_size = workspace_size;
++      g_idle_add (_wnck_pager_queue_resize, pager);
++      return;
++    }
++
++  GTK_WIDGET_CLASS (wnck_pager_parent_class)->size_allocate (widget,
++                                                             allocation);
++}
++
+ static void
+ get_workspace_rect (WnckPager    *pager,
+                     int           space,
+-- 
+2.31.1
+