diff --git a/gtk2_ardour/midi_streamview.cc b/gtk2_ardour/midi_streamview.cc
index 5d170954ae..23d31932d8 100644
--- a/gtk2_ardour/midi_streamview.cc
+++ b/gtk2_ardour/midi_streamview.cc
@@ -245,9 +245,11 @@ MidiStreamView::update_data_note_range(uint8_t min, uint8_t max)
 void
 MidiStreamView::set_layer_display (LayerDisplay d)
 {
-	if (d != Overlaid) {
-		return;
-	}
+
+//revert this change for now.  Although stacked view is weirdly implemented wrt the "scroomer", it is still necessary to manage layered midi regions.
+//	if (d != Overlaid) {
+//		return;
+//	}
 
 	StreamView::set_layer_display (d);
 }
diff --git a/gtk2_ardour/midi_streamview.h b/gtk2_ardour/midi_streamview.h
index 3cf5f9a08e..78f0008157 100644
--- a/gtk2_ardour/midi_streamview.h
+++ b/gtk2_ardour/midi_streamview.h
@@ -78,7 +78,7 @@ class MidiStreamView : public StreamView
 	void update_note_range(uint8_t note_num);
 
 	void set_layer_display (LayerDisplay);
-	bool can_change_layer_display() const { return false; }
+//	bool can_change_layer_display() const { return false; }  //revert this change for now.  Although stacked view is weirdly implemented wrt the "scroomer", it is still necessary to be able to manage layered regions.
 	void redisplay_track ();
 
 	inline double contents_height() const