diff --git a/src/services/tabs.fg.actions.ts b/src/services/tabs.fg.actions.ts
index 96092ce8..fe40484c 100644
--- a/src/services/tabs.fg.actions.ts
+++ b/src/services/tabs.fg.actions.ts
@@ -201,6 +201,14 @@ export async function load(): Promise<void> {
   if (Settings.state.colorizeTabsBranches) Tabs.colorizeBranches()
 
   Tabs.ready = true
+
+  // Call deferred event handlers
+  if (Tabs.deferredEventHandling.length) {
+    Logs.warn('Tabs: Deferred event handlers:', Tabs.deferredEventHandling.length)
+  }
+  Tabs.deferredEventHandling.forEach(cb => cb())
+  Tabs.deferredEventHandling = []
+
   waitingForTabs.forEach(cb => cb())
   waitingForTabs = []
 
@@ -338,13 +346,6 @@ async function restoreTabsState(): Promise<void> {
     Tabs.updateSuccessionDebounced(0)
   }
 
-  // Call deferred event handlers
-  if (Tabs.deferredEventHandling.length) {
-    Logs.warn('Tabs: Deferred event handlers:', Tabs.deferredEventHandling.length)
-  }
-  Tabs.deferredEventHandling.forEach(cb => cb())
-  Tabs.deferredEventHandling = []
-
   Logs.info(`Tabs.restoreTabsState: Done: ${performance.now() - ts}ms`)
 }
 
diff --git a/src/services/tabs.fg.handlers.ts b/src/services/tabs.fg.handlers.ts
index a61a0836..ca8c118c 100644
--- a/src/services/tabs.fg.handlers.ts
+++ b/src/services/tabs.fg.handlers.ts
@@ -98,7 +98,7 @@ function releaseReopenedTabsBuffer(): void {
 
 function onTabCreated(nativeTab: NativeTab, attached?: boolean): void {
   if (nativeTab.windowId !== Windows.id) return
-  if (Tabs.list.length === 0 || Tabs.sorting) {
+  if (!Tabs.ready || Tabs.sorting) {
     Tabs.deferredEventHandling.push(() => onTabCreated(nativeTab))
     return
   }
@@ -460,7 +460,7 @@ function onTabCreated(nativeTab: NativeTab, attached?: boolean): void {
  */
 function onTabUpdated(tabId: ID, change: browser.tabs.ChangeInfo, nativeTab: NativeTab): void {
   if (nativeTab.windowId !== Windows.id) return
-  if (Tabs.list.length === 0 || waitForOtherReopenedTabsBuffer || Tabs.sorting) {
+  if (!Tabs.ready || waitForOtherReopenedTabsBuffer || Tabs.sorting) {
     Tabs.deferredEventHandling.push(() => onTabUpdated(tabId, change, nativeTab))
     return
   }
@@ -823,7 +823,7 @@ function rememberChildTabs(childId: ID, parentId: ID): void {
  */
 function onTabRemoved(tabId: ID, info: browser.tabs.RemoveInfo, detached?: boolean): void {
   if (info.windowId !== Windows.id) return
-  if (Tabs.list.length === 0 || waitForOtherReopenedTabsBuffer || Tabs.sorting) {
+  if (!Tabs.ready || waitForOtherReopenedTabsBuffer || Tabs.sorting) {
     Tabs.deferredEventHandling.push(() => onTabRemoved(tabId, info, detached))
     return
   }
@@ -1118,7 +1118,7 @@ function onTabRemoved(tabId: ID, info: browser.tabs.RemoveInfo, detached?: boole
  */
 function onTabMoved(id: ID, info: browser.tabs.MoveInfo): void {
   if (info.windowId !== Windows.id) return
-  if (Tabs.list.length === 0) {
+  if (!Tabs.ready) {
     Tabs.deferredEventHandling.push(() => onTabMoved(id, info))
     return
   }
@@ -1245,7 +1245,7 @@ function onTabMoved(id: ID, info: browser.tabs.MoveInfo): void {
  */
 function onTabDetached(id: ID, info: browser.tabs.DetachInfo): void {
   if (info.oldWindowId !== Windows.id) return
-  if (Tabs.list.length === 0 || Tabs.sorting) {
+  if (!Tabs.ready || Tabs.sorting) {
     Tabs.deferredEventHandling.push(() => onTabDetached(id, info))
     return
   }
@@ -1276,7 +1276,7 @@ function onTabDetached(id: ID, info: browser.tabs.DetachInfo): void {
 const deferredActivationHandling = { id: NOID, cb: null as (() => void) | null }
 async function onTabAttached(id: ID, info: browser.tabs.AttachInfo): Promise<void> {
   if (info.newWindowId !== Windows.id) return
-  if (Tabs.list.length === 0 || Tabs.sorting) {
+  if (!Tabs.ready || Tabs.sorting) {
     Tabs.deferredEventHandling.push(() => onTabAttached(id, info))
     return
   }
@@ -1325,7 +1325,7 @@ let bufTabActivatedEventIndex = -1
  */
 function onTabActivated(info: browser.tabs.ActiveInfo): void {
   if (info.windowId !== Windows.id) return
-  if (Tabs.list.length === 0 || waitForOtherReopenedTabsBuffer) {
+  if (!Tabs.ready || waitForOtherReopenedTabsBuffer) {
     if (bufTabActivatedEventIndex !== -1) {
       Tabs.deferredEventHandling.splice(bufTabActivatedEventIndex, 1)
     }
diff --git a/src/services/tabs.fg.shadow.ts b/src/services/tabs.fg.shadow.ts
index b53e2ae4..afbfa3c3 100644
--- a/src/services/tabs.fg.shadow.ts
+++ b/src/services/tabs.fg.shadow.ts
@@ -16,6 +16,8 @@ export async function loadInShadowMode(): Promise<void> {
     Tabs.updateUrlCounter(tab.url, 1)
   }
 
+  Tabs.shadowReady = true
+
   // Call deferred event handlers
   if (Tabs.deferredEventHandling.length) {
     Logs.warn('Tabs: Deferred event handlers:', Tabs.deferredEventHandling.length)
@@ -31,6 +33,7 @@ export function unloadShadowed(): void {
   Tabs.urlsInUse = {}
   Tabs.list = []
   Tabs.shadowMode = false
+  Tabs.shadowReady = false
 }
 
 export function setupShadowListeners(): void {
@@ -57,7 +60,7 @@ export function resetShadowListeners(): void {
 
 function onShadowTabCreated(tab: browser.tabs.Tab): void {
   if (tab.windowId !== Windows.id) return
-  if (Tabs.list.length === 0) {
+  if (!Tabs.shadowReady) {
     Tabs.deferredEventHandling.push(() => onShadowTabCreated(tab))
     return
   }
@@ -79,7 +82,7 @@ function onShadowTabUpdated(
   tab: browser.tabs.Tab
 ): void {
   if (tab.windowId !== Windows.id) return
-  if (Tabs.list.length === 0) {
+  if (!Tabs.shadowReady) {
     Tabs.deferredEventHandling.push(() => onShadowTabUpdated(tabId, change, tab))
     return
   }
@@ -102,7 +105,7 @@ function onShadowTabUpdated(
 
 function onShadowTabRemoved(tabId: ID, info: browser.tabs.RemoveInfo): void {
   if (info.windowId !== Windows.id) return
-  if (Tabs.list.length === 0) {
+  if (!Tabs.shadowReady) {
     Tabs.deferredEventHandling.push(() => onShadowTabRemoved(tabId, info))
     return
   }
@@ -130,7 +133,7 @@ function onShadowTabRemoved(tabId: ID, info: browser.tabs.RemoveInfo): void {
 
 function onShadowTabMoved(id: ID, info: browser.tabs.MoveInfo): void {
   if (info.windowId !== Windows.id) return
-  if (Tabs.list.length === 0) {
+  if (!Tabs.shadowReady) {
     Tabs.deferredEventHandling.push(() => onShadowTabMoved(id, info))
     return
   }
@@ -145,7 +148,7 @@ function onShadowTabMoved(id: ID, info: browser.tabs.MoveInfo): void {
 
 function onShadowTabDetached(tabId: ID, info: browser.tabs.DetachInfo): void {
   if (info.oldWindowId !== Windows.id) return
-  if (Tabs.list.length === 0) {
+  if (!Tabs.shadowReady) {
     Tabs.deferredEventHandling.push(() => onShadowTabDetached(tabId, info))
     return
   }
@@ -154,7 +157,7 @@ function onShadowTabDetached(tabId: ID, info: browser.tabs.DetachInfo): void {
 
 async function onShadowTabAttached(tabId: ID, info: browser.tabs.AttachInfo): Promise<void> {
   if (info.newWindowId !== Windows.id) return
-  if (Tabs.list.length === 0) {
+  if (!Tabs.shadowReady) {
     Tabs.deferredEventHandling.push(() => onShadowTabAttached(tabId, info))
     return
   }
@@ -166,7 +169,7 @@ async function onShadowTabAttached(tabId: ID, info: browser.tabs.AttachInfo): Pr
 
 function onShadowTabActivated(info: browser.tabs.ActiveInfo): void {
   if (info.windowId !== Windows.id) return
-  if (Tabs.list.length === 0) {
+  if (!Tabs.shadowReady) {
     Tabs.deferredEventHandling.push(() => onShadowTabActivated(info))
     return
   }
diff --git a/src/services/tabs.fg.ts b/src/services/tabs.fg.ts
index 5c5e104b..0d00605b 100644
--- a/src/services/tabs.fg.ts
+++ b/src/services/tabs.fg.ts
@@ -35,6 +35,7 @@ export const Tabs = {
 
   urlsInUse: {} as Record<string, number>,
   shadowMode: false,
+  shadowReady: false,
 
   tabsReinitializing: false,
   removedTabs: [] as RemovedTabInfo[],