diff --git a/webextensions/sidebar/collapse-expand.js b/webextensions/sidebar/collapse-expand.js
index 27b37313c..d29563d3d 100644
--- a/webextensions/sidebar/collapse-expand.js
+++ b/webextensions/sidebar/collapse-expand.js
@@ -49,8 +49,6 @@ function log(...args) {
 
 export const onUpdating = new EventListenerManager();
 export const onUpdated = new EventListenerManager();
-export const onRefreshStarted = new EventListenerManager();
-export const onRefreshFinished = new EventListenerManager();
 
 export function setCollapsed(tab, info = {}) {
   log('setCollapsed ', tab.id, info);
@@ -78,8 +76,6 @@ export function setCollapsed(tab, info = {}) {
   if (tab.status == 'loading')
     tab.$TST.addState(Constants.kTAB_STATE_THROBBER_UNSYNCHRONIZED);
 
-  onRefreshStarted.dispatch(tab, { collapsed: info.cpllapsed });
-
   const manager = tab.$TST.collapsedStateChangedManager || new EventListenerManager();
 
   if (tab.$TST.updatingCollapsedStateCanceller) {
@@ -119,7 +115,6 @@ export function setCollapsed(tab, info = {}) {
       anchor:    info.anchor,
       last:      info.last
     });
-    onRefreshFinished.dispatch(tab, { collapsed: info.cpllapsed });
   };
   manager.addListener(onCompleted);
 
@@ -147,7 +142,6 @@ export function setCollapsed(tab, info = {}) {
 
   const onCanceled = () => {
     manager.removeListener(onCompleted);
-    onRefreshFinished.dispatch(tab, { collapsed: info.cpllapsed });
   };
 
   nextFrame().then(() => {
diff --git a/webextensions/sidebar/indent.js b/webextensions/sidebar/indent.js
index 40c040dbd..dc385033d 100644
--- a/webextensions/sidebar/indent.js
+++ b/webextensions/sidebar/indent.js
@@ -242,20 +242,6 @@ CollapseExpand.onUpdated.addListener((_tab, _options) => {
     reserveToUpdateVisualMaxTreeLevel();
 });
 
-CollapseExpand.onRefreshStarted.addListener((_tab, _options) => {
-  if (configs.indentAutoShrink &&
-      configs.indentAutoShrinkOnlyForVisible)
-    startBatchToUpdateMaxTreeLevel();
-});
-
-CollapseExpand.onRefreshFinished.addListener((_tab, _options) => {
-  if (configs.indentAutoShrink &&
-      configs.indentAutoShrinkOnlyForVisible) {
-    reserveToUpdateVisualMaxTreeLevel();
-    finishBatchToUpdateMaxTreeLevel();
-  }
-});
-
 const BUFFER_KEY_PREFIX = 'indent-';
 
 BackgroundConnection.onMessage.addListener(async message => {