diff --git a/gtk2_ardour/SAE-de.bindings.in b/gtk2_ardour/SAE-de.bindings.in
index 1c74cc314d..9122317df9 100644
--- a/gtk2_ardour/SAE-de.bindings.in
+++ b/gtk2_ardour/SAE-de.bindings.in
@@ -104,7 +104,7 @@
 (gtk_accel_path "<Actions>/Editor/normalize-region" "n")
 (gtk_accel_path "<Actions>/Main/New" "<%PRIMARY%>n")
 (gtk_accel_path "<Actions>/Main/AddTrackBus" "<%PRIMARY%><%TERTIARY%>n")
-(gtk_accel_path "<Actions>/Common/goto-mixer" "<%SECONDARY%>m")
+(gtk_accel_path "<Actions>/Common/toggle-editor-mixer-on-top" "<%SECONDARY%>m")
 (gtk_accel_path "<Actions>/Editor/add-location-from-playhead" "KP_Enter")
 (gtk_accel_path "<Actions>/Editor/mute-unmute-region" "m")
 
diff --git a/gtk2_ardour/SAE-us.bindings.in b/gtk2_ardour/SAE-us.bindings.in
index 523878bd3f..598d9b1f55 100644
--- a/gtk2_ardour/SAE-us.bindings.in
+++ b/gtk2_ardour/SAE-us.bindings.in
@@ -229,7 +229,8 @@
 ; (gtk_accel_path "<Actions>/Editor/SnapMode" "")
 (gtk_accel_path "<Actions>/Common/ToggleOptionsEditor" "<%WINDOW%>o")
 ; (gtk_accel_path "<Actions>/Editor/PullupMinus4" "")
-(gtk_accel_path "<Actions>/Common/goto-mixer" "<%WINDOW%>m")
+; (gtk_accel_path "<Actions>/Common/goto-mixer" "<%WINDOW%>m")
+(gtk_accel_path "<Actions>/Common/toggle-editor-mixer-on-top" "<%WINDOW%>m")
 ; (gtk_accel_path "<Actions>/RegionList/SortBySourceFileCreationDate" "")
 ; (gtk_accel_path "<Actions>/redirectmenu/activate" "")
 (gtk_accel_path "<Actions>/Editor/extend-range-to-start-of-region" "leftanglebracket")
diff --git a/gtk2_ardour/ardour-sae.menus b/gtk2_ardour/ardour-sae.menus
index 582fb7ead4..3b8330e33f 100644
--- a/gtk2_ardour/ardour-sae.menus
+++ b/gtk2_ardour/ardour-sae.menus
@@ -268,6 +268,7 @@
 	<menu action="WindowMenu">
 	      <menuitem action='goto-editor'/>
 	      <menuitem action='goto-mixer'/>
+	      <menuitem action='toggle-editor-mixer-on-top'/>
 	      <menuitem action='ToggleLocations'/>
 	      <menuitem action='ToggleKeyEditor'/>
 	      <menuitem action='ToggleThemeManager'/>
diff --git a/gtk2_ardour/ardour_ui.cc b/gtk2_ardour/ardour_ui.cc
index c8d0c8afdc..670f896923 100644
--- a/gtk2_ardour/ardour_ui.cc
+++ b/gtk2_ardour/ardour_ui.cc
@@ -199,6 +199,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 	session_loaded = false;
 	last_speed_displayed = -1.0f;
 	ignore_dual_punch = false;
+	_mixer_on_top = false;
 
 	last_configure_time= 0;
 
diff --git a/gtk2_ardour/ardour_ui.h b/gtk2_ardour/ardour_ui.h
index ed62d5c138..79ab093e9d 100644
--- a/gtk2_ardour/ardour_ui.h
+++ b/gtk2_ardour/ardour_ui.h
@@ -276,8 +276,10 @@ class ARDOUR_UI : public Gtkmm2ext::UI
 
 	Gtk::Tooltips          _tooltips;
 
-	void                     goto_editor_window ();
-	void                     goto_mixer_window ();
+	void                goto_editor_window ();
+	void                goto_mixer_window ();
+	void                toggle_editor_mixer_on_top ();
+	bool                _mixer_on_top;
 
 	GlobalClickBox     *online_control_button;
 	vector<string>      online_control_strings;
diff --git a/gtk2_ardour/ardour_ui_dependents.cc b/gtk2_ardour/ardour_ui_dependents.cc
index 7d623ac58e..78299941f9 100644
--- a/gtk2_ardour/ardour_ui_dependents.cc
+++ b/gtk2_ardour/ardour_ui_dependents.cc
@@ -99,6 +99,7 @@ ARDOUR_UI::goto_editor_window ()
 
 	editor->show_window ();
 	editor->present();
+	_mixer_on_top = false;
 	flush_pending ();
 }
 
@@ -107,9 +108,22 @@ ARDOUR_UI::goto_mixer_window ()
 {
 	mixer->show_window ();
 	mixer->present();
+	_mixer_on_top = true;
 	flush_pending ();
 }
 
+void
+ARDOUR_UI::toggle_editor_mixer_on_top ()
+{
+	if (_mixer_on_top) {
+		goto_editor_window ();
+		_mixer_on_top = false;
+	} else {
+		goto_mixer_window ();
+		_mixer_on_top = true;
+	}
+}
+
 gint
 ARDOUR_UI::exit_on_main_window_close (GdkEventAny *ev)
 {
diff --git a/gtk2_ardour/ardour_ui_ed.cc b/gtk2_ardour/ardour_ui_ed.cc
index 974d8aadf1..7a355982be 100644
--- a/gtk2_ardour/ardour_ui_ed.cc
+++ b/gtk2_ardour/ardour_ui_ed.cc
@@ -203,6 +203,7 @@ ARDOUR_UI::install_actions ()
 
 	ActionManager::register_action (common_actions, X_("goto-editor"), _("Show Editor"),  mem_fun(*this, &ARDOUR_UI::goto_editor_window));
 	ActionManager::register_action (common_actions, X_("goto-mixer"), _("Show Mixer"),  mem_fun(*this, &ARDOUR_UI::goto_mixer_window));
+	ActionManager::register_action (common_actions, X_("toggle-editor-mixer-on-top"), _("Toggle Editor Mixer on Top"),  mem_fun(*this, &ARDOUR_UI::toggle_editor_mixer_on_top));
 	ActionManager::register_toggle_action (common_actions, X_("ToggleOptionsEditor"), _("Preferences"), mem_fun(*this, &ARDOUR_UI::toggle_options_window));
 	act = ActionManager::register_toggle_action (common_actions, X_("ToggleInspector"), _("Track/Bus Inspector"), mem_fun(*this, &ARDOUR_UI::toggle_route_params_window));
 	ActionManager::session_sensitive_actions.push_back (act);
diff --git a/gtk2_ardour/editor.cc b/gtk2_ardour/editor.cc
index aad286610c..1bd85650e1 100644
--- a/gtk2_ardour/editor.cc
+++ b/gtk2_ardour/editor.cc
@@ -4415,7 +4415,14 @@ Editor::idle_visual_changer ()
 	}
 
 	if (p & VisualChange::TimeOrigin) {
+		double current_time_origin = horizontal_adjustment.get_value();
 		horizontal_adjustment.set_value (pending_visual_change.time_origin / frames_per_unit);
+
+		if (current_time_origin == pending_visual_change.time_origin) {
+			/* changed signal not emitted */
+			update_fixed_rulers ();
+			redisplay_tempo (true);
+		}
 	}
 
 	//cerr << "Editor::idle_visual_changer () called ha v:l:u:ps:fpu = " << horizontal_adjustment.get_value() << ":" << horizontal_adjustment.get_lower() << ":" << horizontal_adjustment.get_upper() << ":" << horizontal_adjustment.get_page_size() << ":" << frames_per_unit << endl;//DEBUG