diff --git a/gtk2_ardour/automation_time_axis.cc b/gtk2_ardour/automation_time_axis.cc
index 0213e901d5..eacd83316c 100644
--- a/gtk2_ardour/automation_time_axis.cc
+++ b/gtk2_ardour/automation_time_axis.cc
@@ -529,13 +529,13 @@ AutomationTimeAxisView::clear_clicked ()
 }
 
 void
-AutomationTimeAxisView::set_height (uint32_t h, TrackHeightMode m)
+AutomationTimeAxisView::set_height (uint32_t h, TrackHeightMode m, bool from_idle)
 {
 	bool const changed = (height != (uint32_t) h) || first_call_to_set_height;
 	uint32_t const normal = preset_height (HeightNormal);
 	bool const changed_between_small_and_normal = ( (height < normal && h >= normal) || (height >= normal || h < normal) );
 
-	TimeAxisView::set_height (h, m);
+	TimeAxisView::set_height (h, m, from_idle);
 
 	_base_rect->set_y1 (h);
 
diff --git a/gtk2_ardour/automation_time_axis.h b/gtk2_ardour/automation_time_axis.h
index 68e0d6c3c6..c883c09125 100644
--- a/gtk2_ardour/automation_time_axis.h
+++ b/gtk2_ardour/automation_time_axis.h
@@ -78,7 +78,7 @@ public:
 
 	~AutomationTimeAxisView();
 
-	virtual void set_height (uint32_t, TrackHeightMode m = OnlySelf);
+	virtual void set_height (uint32_t, TrackHeightMode m = OnlySelf, bool from_idle = false);
 	void set_samples_per_pixel (double);
 	std::string name() const { return _name; }
 	Gdk::Color color () const;
diff --git a/gtk2_ardour/editor_ops.cc b/gtk2_ardour/editor_ops.cc
index 3a8c95dafe..3e65a018cb 100644
--- a/gtk2_ardour/editor_ops.cc
+++ b/gtk2_ardour/editor_ops.cc
@@ -7929,6 +7929,12 @@ Editor::set_track_height (Height h)
 	for (TrackSelection::iterator x = ts.begin(); x != ts.end(); ++x) {
 		(*x)->set_height_enum (h);
 	}
+
+	/* when not setting height from a drag, nothing will cause a redisplay
+	   of the non-altered tracks. Do that explicitly.
+	*/
+
+	queue_redisplay_track_views ();
 }
 
 void
diff --git a/gtk2_ardour/midi_time_axis.cc b/gtk2_ardour/midi_time_axis.cc
index 2f63747ea9..1c359b171e 100644
--- a/gtk2_ardour/midi_time_axis.cc
+++ b/gtk2_ardour/midi_time_axis.cc
@@ -571,7 +571,7 @@ MidiTimeAxisView::update_midi_controls_visibility (uint32_t h)
 }
 
 void
-MidiTimeAxisView::set_height (uint32_t h, TrackHeightMode m)
+MidiTimeAxisView::set_height (uint32_t h, TrackHeightMode m, bool from_idle)
 {
 	update_midi_controls_visibility (h);
 
@@ -588,7 +588,7 @@ MidiTimeAxisView::set_height (uint32_t h, TrackHeightMode m)
 	 * which needs to know if we have just shown or hidden a scroomer /
 	 * piano roll.
 	 */
-	RouteTimeAxisView::set_height (h, m);
+	RouteTimeAxisView::set_height (h, m, from_idle);
 }
 
 void
diff --git a/gtk2_ardour/midi_time_axis.h b/gtk2_ardour/midi_time_axis.h
index 5778d7d436..e993d39a45 100644
--- a/gtk2_ardour/midi_time_axis.h
+++ b/gtk2_ardour/midi_time_axis.h
@@ -85,7 +85,7 @@ public:
 
 	MidiStreamView* midi_view();
 
-	void set_height (uint32_t, TrackHeightMode m = OnlySelf);
+	void set_height (uint32_t, TrackHeightMode m = OnlySelf, bool from_idle = false);
 	void set_layer_display (LayerDisplay d);
 
 	boost::shared_ptr<ARDOUR::MidiRegion> add_region (Temporal::timepos_t const &, Temporal::timecnt_t const &, bool);
diff --git a/gtk2_ardour/public_editor.h b/gtk2_ardour/public_editor.h
index b849ce6687..0978083b81 100644
--- a/gtk2_ardour/public_editor.h
+++ b/gtk2_ardour/public_editor.h
@@ -550,6 +550,8 @@ public:
 
 	virtual bool should_ripple () const = 0;
 
+	virtual void queue_redisplay_track_views () = 0;
+
 	/// Singleton instance, set up by Editor::Editor()
 
 	static PublicEditor* _instance;
diff --git a/gtk2_ardour/route_time_axis.cc b/gtk2_ardour/route_time_axis.cc
index 12799ab21c..f7716841a8 100644
--- a/gtk2_ardour/route_time_axis.cc
+++ b/gtk2_ardour/route_time_axis.cc
@@ -959,7 +959,7 @@ RouteTimeAxisView::show_selection (TimeSelection& ts)
 }
 
 void
-RouteTimeAxisView::set_height (uint32_t h, TrackHeightMode m)
+RouteTimeAxisView::set_height (uint32_t h, TrackHeightMode m, bool from_idle)
 {
 	int gmlen = h - 9;
 	bool height_changed = (height == 0) || (h != height);
@@ -970,7 +970,7 @@ RouteTimeAxisView::set_height (uint32_t h, TrackHeightMode m)
 	}
 	gm.get_level_meter().setup_meters (gmlen, meter_width);
 
-	TimeAxisView::set_height (h, m);
+	TimeAxisView::set_height (h, m, from_idle);
 
 	if (_view) {
 		_view->set_height ((double) current_height());
diff --git a/gtk2_ardour/route_time_axis.h b/gtk2_ardour/route_time_axis.h
index f146f80acb..ecf22c20e0 100644
--- a/gtk2_ardour/route_time_axis.h
+++ b/gtk2_ardour/route_time_axis.h
@@ -94,7 +94,7 @@ public:
 	void set_button_names ();
 
 	void set_samples_per_pixel (double);
-	void set_height (uint32_t h, TrackHeightMode m = OnlySelf);
+	void set_height (uint32_t h, TrackHeightMode m = OnlySelf, bool from_idle = false);
 	void show_timestretch (Temporal::timepos_t const & start, Temporal::timepos_t const & end, int layers, int layer);
 	void hide_timestretch ();
 	void selection_click (GdkEventButton*);
diff --git a/gtk2_ardour/time_axis_view.cc b/gtk2_ardour/time_axis_view.cc
index 3e382a23c5..05a38ebec1 100644
--- a/gtk2_ardour/time_axis_view.cc
+++ b/gtk2_ardour/time_axis_view.cc
@@ -446,10 +446,9 @@ TimeAxisView::controls_ebox_button_press (GdkEventButton* event)
 void
 TimeAxisView::idle_resize (int32_t h)
 {
-	set_height (std::max(0, h));
+	set_height (std::max(0, h), OnlySelf, true);
 }
 
-
 bool
 TimeAxisView::controls_ebox_motion (GdkEventMotion* ev)
 {
@@ -600,7 +599,7 @@ TimeAxisView::set_height_enum (Height h, bool apply_to_selection)
 }
 
 void
-TimeAxisView::set_height (uint32_t h, TrackHeightMode m)
+TimeAxisView::set_height (uint32_t h, TrackHeightMode m, bool from_idle)
 {
 	uint32_t lanes = 0;
 	if (m == TotalHeight) {
@@ -637,6 +636,10 @@ TimeAxisView::set_height (uint32_t h, TrackHeightMode m)
 	}
 
 	_editor.override_visible_track_count ();
+
+	if (!from_idle) {
+		_editor.queue_redisplay_track_views ();
+	}
 }
 
 void
diff --git a/gtk2_ardour/time_axis_view.h b/gtk2_ardour/time_axis_view.h
index a4d1b9c7ae..27e01e13a2 100644
--- a/gtk2_ardour/time_axis_view.h
+++ b/gtk2_ardour/time_axis_view.h
@@ -159,7 +159,7 @@ public:
 		HeightPerLane
 	};
 
-	virtual void set_height (uint32_t h, TrackHeightMode m = OnlySelf);
+	virtual void set_height (uint32_t h, TrackHeightMode m = OnlySelf, bool from_idle = false);
 	void set_height_enum (Height, bool apply_to_selection = false);
 	void reset_height();
 
diff --git a/gtk2_ardour/vca_time_axis.cc b/gtk2_ardour/vca_time_axis.cc
index 754a8b4508..0d4b5b1eaa 100644
--- a/gtk2_ardour/vca_time_axis.cc
+++ b/gtk2_ardour/vca_time_axis.cc
@@ -354,9 +354,10 @@ VCATimeAxisView::color () const
 }
 
 void
-VCATimeAxisView::set_height (uint32_t h, TrackHeightMode m)
+VCATimeAxisView::set_height (uint32_t h, TrackHeightMode m, bool from_idle)
 {
-	TimeAxisView::set_height (h, m);
+	TimeAxisView::set_height (h, m, from_idle);
+
 	if (height >= preset_height (HeightNormal)) {
 		drop_button.show ();
 		automation_button.show ();
diff --git a/gtk2_ardour/vca_time_axis.h b/gtk2_ardour/vca_time_axis.h
index f95a44465f..74d051d0a9 100644
--- a/gtk2_ardour/vca_time_axis.h
+++ b/gtk2_ardour/vca_time_axis.h
@@ -51,7 +51,7 @@ public:
 	Gdk::Color color () const;
 	std::string state_id() const;
 
-	void set_height (uint32_t h, TrackHeightMode m = OnlySelf);
+	void set_height (uint32_t h, TrackHeightMode m = OnlySelf, bool from_idle = false);
 
 	bool marked_for_display () const;
 	bool set_marked_for_display (bool);