diff --git a/src/global/actions/ui/initial.ts b/src/global/actions/ui/initial.ts
index 18fd7f94d..ba4f0fe64 100644
--- a/src/global/actions/ui/initial.ts
+++ b/src/global/actions/ui/initial.ts
@@ -32,7 +32,7 @@ setSystemThemeChangeCallback((theme) => {
   // eslint-disable-next-line eslint-multitab-tt/no-immediate-global
   let global = getGlobal();
 
-  if (!global.settings.byKey.shouldUseSystemTheme) return;
+  if (!global.isInited || !global.settings.byKey.shouldUseSystemTheme) return;
 
   global = replaceSettings(global, { theme });
   setGlobal(global);
diff --git a/src/global/actions/ui/passcode.ts b/src/global/actions/ui/passcode.ts
index f55b4913a..664d418d8 100644
--- a/src/global/actions/ui/passcode.ts
+++ b/src/global/actions/ui/passcode.ts
@@ -16,7 +16,9 @@ import { clearPasscodeSettings, updatePasscodeSettings } from '../../reducers';
 let noLockOnUnload = false;
 onBeforeUnload(() => {
   // eslint-disable-next-line eslint-multitab-tt/no-immediate-global
-  if (getGlobal().passcode.hasPasscode && !noLockOnUnload && Object.keys(getGlobal().byTabId).length === 1) {
+  const global = getGlobal();
+  if (!global.isInited) return;
+  if (global.passcode.hasPasscode && !noLockOnUnload && Object.keys(global.byTabId).length === 1) {
     clearStoredSession();
   }
 });
diff --git a/src/global/initialState.ts b/src/global/initialState.ts
index 535fa9332..f668e7685 100644
--- a/src/global/initialState.ts
+++ b/src/global/initialState.ts
@@ -66,6 +66,7 @@ export const INITIAL_PERFORMANCE_STATE_MIN: PerformanceType = {
 };
 
 export const INITIAL_GLOBAL_STATE: GlobalState = {
+  isInited: true,
   attachMenu: { bots: {} },
   passcode: {},
   twoFaSettings: {},
diff --git a/src/global/intervals.ts b/src/global/intervals.ts
index a1a2ba00e..f069e1662 100644
--- a/src/global/intervals.ts
+++ b/src/global/intervals.ts
@@ -41,6 +41,8 @@ function stopIntervals() {
 function checkStoryExpiration() {
   // eslint-disable-next-line eslint-multitab-tt/no-immediate-global
   let global = getGlobal();
+  if (!global.isInited) return;
+
   const serverTime = getServerTime();
 
   Object.values(global.stories.byPeerId).forEach((peerStories) => {
diff --git a/src/global/types.ts b/src/global/types.ts
index 010630438..ca38b204f 100644
--- a/src/global/types.ts
+++ b/src/global/types.ts
@@ -805,6 +805,7 @@ export type TabState = {
 };
 
 export type GlobalState = {
+  isInited: boolean;
   config?: ApiConfig;
   appConfig?: ApiAppConfig;
   peerColors?: ApiPeerColors;
diff --git a/src/lib/teact/teactn.tsx b/src/lib/teact/teactn.tsx
index 1fdf9d338..5b70417b1 100644
--- a/src/lib/teact/teactn.tsx
+++ b/src/lib/teact/teactn.tsx
@@ -52,7 +52,9 @@ type ActivationFn<OwnProps = undefined> = (
   global: GlobalState, ownProps: OwnProps, stickToFirst: StickToFirstFn,
 ) => boolean;
 
-let currentGlobal = {} as GlobalState;
+let currentGlobal = {
+  isInited: false,
+} as GlobalState;
 
 // eslint-disable-next-line @typescript-eslint/naming-convention
 let DEBUG_currentCapturedId: number | undefined;