diff --git a/client/js/controls/post_edit_sidebar_control.js b/client/js/controls/post_edit_sidebar_control.js
index 59109bd..2c279d4 100644
--- a/client/js/controls/post_edit_sidebar_control.js
+++ b/client/js/controls/post_edit_sidebar_control.js
@@ -131,6 +131,10 @@ class PostEditSidebarControl extends events.EventTarget {
                         this.dispatchEvent(new CustomEvent('change'));
                     });
             }
+            this._postNotesOverlayControl.addEventListener(
+                'change', e => {
+                    this.dispatchEvent(new CustomEvent('change'));
+                });
         }
 
         if (this._noteTextareaNode) {
diff --git a/client/js/controls/post_notes_overlay_control.js b/client/js/controls/post_notes_overlay_control.js
index ef9b293..d29da2c 100644
--- a/client/js/controls/post_notes_overlay_control.js
+++ b/client/js/controls/post_notes_overlay_control.js
@@ -723,12 +723,15 @@ class PostNotesOverlayControl extends events.EventTarget {
 
         note.polygon.addEventListener('change', e => {
             this._updateEdgeNode(e.detail.point, note);
+            this.dispatchEvent(new CustomEvent('change'));
         });
         note.polygon.addEventListener('remove', e => {
             this._deleteEdgeNode(e.detail.point, note);
+            this.dispatchEvent(new CustomEvent('change'));
         });
         note.polygon.addEventListener('add', e => {
             this._createEdgeNode(e.detail.point, groupNode);
+            this.dispatchEvent(new CustomEvent('change'));
         });
 
         this._svgNode.appendChild(groupNode);