diff --git a/gtk2_ardour/editor.cc b/gtk2_ardour/editor.cc
index 9cb680463e..4a18d0c813 100644
--- a/gtk2_ardour/editor.cc
+++ b/gtk2_ardour/editor.cc
@@ -816,6 +816,11 @@ Editor::show_window ()
 	if (!is_visible ()) {
 		show_all ();
 
+		/* XXX: this is a bit unfortunate; it would probably
+		   be nicer if we could just call show () above rather
+		   than needing the show_all ()
+		*/
+		
 		/* re-hide stuff if necessary */
 		editor_list_button_toggled ();
 		parameter_changed ("show-summary");
@@ -832,6 +837,10 @@ Editor::show_window ()
 			tv = (static_cast<TimeAxisView*>(*i));
 			tv->reset_height ();
 		}
+
+		if (current_mixer_strip) {
+			current_mixer_strip->hide_things ();
+		}
 	}
 
 	present ();
diff --git a/gtk2_ardour/editor_mixer.cc b/gtk2_ardour/editor_mixer.cc
index ec71892235..ae045d7a45 100644
--- a/gtk2_ardour/editor_mixer.cc
+++ b/gtk2_ardour/editor_mixer.cc
@@ -121,7 +121,7 @@ Editor::show_editor_mixer (bool yn)
 		if (current_mixer_strip->get_parent() == 0) {
 			global_hpacker.pack_start (*current_mixer_strip, Gtk::PACK_SHRINK );
  			global_hpacker.reorder_child (*current_mixer_strip, 0);
-			current_mixer_strip->show_all ();
+			current_mixer_strip->show ();
 		}
 
 	} else {
diff --git a/gtk2_ardour/mixer_strip.cc b/gtk2_ardour/mixer_strip.cc
index 33b012aebb..8794381229 100644
--- a/gtk2_ardour/mixer_strip.cc
+++ b/gtk2_ardour/mixer_strip.cc
@@ -1904,3 +1904,9 @@ MixerStrip::plugin_selector()
 {
 	return _mixer.plugin_selector();
 }
+
+void
+MixerStrip::hide_things ()
+{
+	processor_box.hide_things ();
+}
diff --git a/gtk2_ardour/mixer_strip.h b/gtk2_ardour/mixer_strip.h
index fb56c5284b..58eb2a0e19 100644
--- a/gtk2_ardour/mixer_strip.h
+++ b/gtk2_ardour/mixer_strip.h
@@ -107,6 +107,8 @@ class MixerStrip : public RouteUI, public Gtk::EventBox
 		return _mixer_owned;
 	}
 
+	void hide_things ();
+
 	sigc::signal<void> WidthChanged;
 
 	/** The delivery that we are handling the level for with our fader has changed */
diff --git a/gtk2_ardour/processor_box.cc b/gtk2_ardour/processor_box.cc
index c5454d59aa..6019f20f7f 100644
--- a/gtk2_ardour/processor_box.cc
+++ b/gtk2_ardour/processor_box.cc
@@ -384,6 +384,12 @@ PluginInsertProcessorEntry::plugin_insert_splitting_changed ()
 	}
 }
 
+void
+PluginInsertProcessorEntry::hide_things ()
+{
+	plugin_insert_splitting_changed ();
+}
+
 void
 PluginInsertProcessorEntry::setup_visuals ()
 {
@@ -2285,6 +2291,15 @@ ProcessorBox::mixer_strip_delivery_changed (boost::weak_ptr<Delivery> w)
 	}
 }
 
+void
+ProcessorBox::hide_things ()
+{
+	list<ProcessorEntry*> c = processor_display.children ();
+	for (list<ProcessorEntry*>::iterator i = c.begin(); i != c.end(); ++i) {
+		(*i)->hide_things ();
+	}
+}
+
 ProcessorWindowProxy::ProcessorWindowProxy (
 	string const & name,
 	XMLNode const * node,
diff --git a/gtk2_ardour/processor_box.h b/gtk2_ardour/processor_box.h
index a6395fc4ef..bd5f18b947 100644
--- a/gtk2_ardour/processor_box.h
+++ b/gtk2_ardour/processor_box.h
@@ -119,6 +119,9 @@ public:
 	void set_enum_width (Width);
 	virtual void set_pixel_width (int) {}
 
+	/** Hide any widgets that should be hidden */
+	virtual void hide_things () {}
+
 protected:
 	
 	virtual void setup_visuals ();
@@ -173,6 +176,8 @@ class PluginInsertProcessorEntry : public ProcessorEntry
 public:
 	PluginInsertProcessorEntry (boost::shared_ptr<ARDOUR::PluginInsert>, Width);
 
+	void hide_things ();
+	
 private:
 	void setup_visuals ();
 	void plugin_insert_splitting_changed ();
@@ -206,6 +211,8 @@ class ProcessorBox : public Gtk::HBox, public PluginInterestedObject, public ARD
 	void select_all_inserts ();
 	void select_all_sends ();
 
+	void hide_things ();
+
 	Gtk::Window* get_processor_ui (boost::shared_ptr<ARDOUR::Processor>) const;
 	void toggle_edit_processor (boost::shared_ptr<ARDOUR::Processor>);