libreoffice/fix_gtk_popover_on_3.20.patch

Index: libreoffice-7.3.1.3/vcl/unx/gtk3/gtkinst.cxx
===================================================================
--- libreoffice-7.3.1.3.orig/vcl/unx/gtk3/gtkinst.cxx
+++ libreoffice-7.3.1.3/vcl/unx/gtk3/gtkinst.cxx
@@ -22177,7 +22177,11 @@ public:
         }
 #endif
 
-        gtk_popover_popup(m_pPopover);
+        // in GTK 3.22 you can just call gtk_popover_popup() to get it to show with transitions,
+        // but on SLE-12-SP5 we just have GTK 3.20, so enable transitions and show it to get the
+        // same effect
+        gtk_popover_set_transitions_enabled(m_pPopover, true);
+        gtk_widget_show(GTK_WIDGET(m_pPopover));
     }
 
 #if !GTK_CHECK_VERSION(4, 0, 0)
@@ -22218,7 +22222,7 @@ public:
         }
 #endif
 
-        gtk_popover_popdown(m_pPopover);
+        gtk_widget_hide(GTK_WIDGET(m_pPopover));
     }
 
     void PopdownAndFlushClosedSignal()