diff --git a/package-lock.json b/package-lock.json
index 9015275e9b..05efd75c14 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "playwright-core",
-  "version": "0.13.0-post",
+  "version": "0.14.0-post",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/src/chromium/crBrowser.ts b/src/chromium/crBrowser.ts
index 3b78e79eac..dbe0d0a3bc 100644
--- a/src/chromium/crBrowser.ts
+++ b/src/chromium/crBrowser.ts
@@ -46,10 +46,11 @@ export class CRBrowser extends BrowserBase {
   private _tracingRecording = false;
   private _tracingPath: string | null = '';
   private _tracingClient: CRSession | undefined;
+  readonly _isHeadful: boolean;
 
-  static async connect(transport: ConnectionTransport, isPersistent: boolean, logger: InnerLogger, slowMo?: number): Promise<CRBrowser> {
-    const connection = new CRConnection(SlowMoTransport.wrap(transport, slowMo), logger);
-    const browser = new CRBrowser(connection, logger, isPersistent);
+  static async connect(transport: ConnectionTransport, isPersistent: boolean, logger: InnerLogger, options: { slowMo?: number, headless?: boolean } = {}): Promise<CRBrowser> {
+    const connection = new CRConnection(SlowMoTransport.wrap(transport, options.slowMo), logger);
+    const browser = new CRBrowser(connection, logger, isPersistent, !options.headless);
     const session = connection.rootSession;
     if (!isPersistent) {
       await session.send('Target.setAutoAttach', { autoAttach: true, waitForDebuggerOnStart: true, flatten: true });
@@ -84,13 +85,14 @@ export class CRBrowser extends BrowserBase {
     return browser;
   }
 
-  constructor(connection: CRConnection, logger: InnerLogger, isPersistent: boolean) {
+  constructor(connection: CRConnection, logger: InnerLogger, isPersistent: boolean, isHeadful: boolean) {
     super(logger);
     this._connection = connection;
     this._session = this._connection.rootSession;
 
     if (isPersistent)
       this._defaultContext = new CRBrowserContext(this, null, validateBrowserContextOptions({}));
+    this._isHeadful = isHeadful;
     this._connection.on(ConnectionEvents.Disconnected, () => {
       for (const context of this._contexts.values())
         context._browserClosed();
@@ -141,7 +143,7 @@ export class CRBrowser extends BrowserBase {
     assert(!this._serviceWorkers.has(targetInfo.targetId), 'Duplicate target ' + targetInfo.targetId);
 
     if (targetInfo.type === 'background_page') {
-      const backgroundPage = new CRPage(session, targetInfo.targetId, context, null);
+      const backgroundPage = new CRPage(session, targetInfo.targetId, context, null, false);
       this._backgroundPages.set(targetInfo.targetId, backgroundPage);
       backgroundPage.pageOrError().then(() => {
         context!.emit(Events.CRBrowserContext.BackgroundPage, backgroundPage._page);
@@ -151,7 +153,7 @@ export class CRBrowser extends BrowserBase {
 
     if (targetInfo.type === 'page') {
       const opener = targetInfo.openerId ? this._crPages.get(targetInfo.openerId) || null : null;
-      const crPage = new CRPage(session, targetInfo.targetId, context, opener);
+      const crPage = new CRPage(session, targetInfo.targetId, context, opener, this._isHeadful);
       this._crPages.set(targetInfo.targetId, crPage);
       if (opener && opener._initializedPage) {
         for (const signalBarrier of opener._initializedPage._frameManager._signalBarriers)
diff --git a/src/chromium/crPage.ts b/src/chromium/crPage.ts
index 7cf2fd0084..e8b6414066 100644
--- a/src/chromium/crPage.ts
+++ b/src/chromium/crPage.ts
@@ -39,6 +39,7 @@ import { ConsoleMessage } from '../console';
 import { NotConnectedError } from '../errors';
 import { logError } from '../logger';
 
+
 const UTILITY_WORLD_NAME = '__playwright_utility_world__';
 
 export class CRPage implements PageDelegate {
@@ -55,7 +56,7 @@ export class CRPage implements PageDelegate {
   private readonly _pagePromise: Promise<Page | Error>;
   _initializedPage: Page | null = null;
 
-  constructor(client: CRSession, targetId: string, browserContext: CRBrowserContext, opener: CRPage | null) {
+  constructor(client: CRSession, targetId: string, browserContext: CRBrowserContext, opener: CRPage | null, hasUIWindow: boolean) {
     this._targetId = targetId;
     this._opener = opener;
     this.rawKeyboard = new RawKeyboardImpl(client);
@@ -67,7 +68,7 @@ export class CRPage implements PageDelegate {
     this._mainFrameSession = new FrameSession(this, client, targetId);
     this._sessions.set(targetId, this._mainFrameSession);
     client.once(CRSessionEvents.Disconnected, () => this._page._didDisconnect());
-    this._pagePromise = this._mainFrameSession._initialize().then(() => this._initializedPage = this._page).catch(e => e);
+    this._pagePromise = this._mainFrameSession._initialize(hasUIWindow).then(() => this._initializedPage = this._page).catch(e => e);
   }
 
   private async _forAllFrameSessions(cb: (frame: FrameSession) => Promise<any>) {
@@ -97,7 +98,7 @@ export class CRPage implements PageDelegate {
     this._page._frameManager.removeChildFramesRecursively(frame);
     const frameSession = new FrameSession(this, session, targetId);
     this._sessions.set(targetId, frameSession);
-    frameSession._initialize().catch(e => e);
+    frameSession._initialize(false).catch(e => e);
   }
 
   removeFrameSession(targetId: Protocol.Target.TargetID) {
@@ -319,6 +320,7 @@ class FrameSession {
   private _firstNonInitialNavigationCommittedPromise: Promise<void>;
   private _firstNonInitialNavigationCommittedFulfill = () => {};
   private _firstNonInitialNavigationCommittedReject = (e: Error) => {};
+  private _windowId: number | undefined;
 
   constructor(crPage: CRPage, client: CRSession, targetId: string) {
     this._client = client;
@@ -364,7 +366,11 @@ class FrameSession {
     ];
   }
 
-  async _initialize() {
+  async _initialize(hasUIWindow: boolean) {
+    if (hasUIWindow) {
+      const { windowId } = await this._client.send('Browser.getWindowForTarget');
+      this._windowId = windowId;
+    }
     let lifecycleEventsEnabled: Promise<any>;
     if (!this._isMainFrame())
       this._addSessionListeners();
@@ -696,6 +702,20 @@ class FrameSession {
         screenOrientation: isLandscape ? { angle: 90, type: 'landscapePrimary' } : { angle: 0, type: 'portraitPrimary' },
       }),
     ];
+    if (this._windowId) {
+      let insets = { width: 24, height: 88 };
+      if (process.platform === 'win32')
+        insets = { width: 16, height: 88 };
+      else if (process.platform === 'linux')
+        insets = { width: 8, height: 85 };
+      else if (process.platform === 'darwin')
+        insets = { width: 2, height: 80 };
+
+      promises.push(this._client.send('Browser.setWindowBounds', {
+        windowId: this._windowId,
+        bounds: { width: viewport.width + insets.width, height: viewport.height + insets.height }
+      }));
+    }
     await Promise.all(promises);
   }
 
diff --git a/src/server/chromium.ts b/src/server/chromium.ts
index 716589969e..88d8762ca0 100644
--- a/src/server/chromium.ts
+++ b/src/server/chromium.ts
@@ -49,7 +49,7 @@ export class Chromium implements BrowserType<CRBrowser> {
   async launch(options: LaunchOptions = {}): Promise<CRBrowser> {
     assert(!(options as any).userDataDir, 'userDataDir option is not supported in `browserType.launch`. Use `browserType.launchPersistentContext` instead');
     const { browserServer, transport, downloadsPath, logger } = await this._launchServer(options, 'local');
-    const browser = await CRBrowser.connect(transport!, false, logger, options.slowMo);
+    const browser = await CRBrowser.connect(transport!, false, logger, options);
     browser._ownedServer = browserServer;
     browser._downloadsPath = downloadsPath;
     return browser;
@@ -60,14 +60,10 @@ export class Chromium implements BrowserType<CRBrowser> {
   }
 
   async launchPersistentContext(userDataDir: string, options: LaunchOptions = {}): Promise<BrowserContext> {
-    const {
-      timeout = 30000,
-      slowMo = 0,
-    } = options;
     const { transport, browserServer, logger } = await this._launchServer(options, 'persistent', userDataDir);
-    const browser = await CRBrowser.connect(transport!, true, logger, slowMo);
+    const browser = await CRBrowser.connect(transport!, true, logger, options);
     browser._ownedServer = browserServer;
-    await helper.waitWithTimeout(browser._firstPagePromise, 'first page', timeout);
+    await helper.waitWithTimeout(browser._firstPagePromise, 'first page', options.timeout || 30000);
     return browser._defaultContext!;
   }
 
@@ -137,7 +133,7 @@ export class Chromium implements BrowserType<CRBrowser> {
 
   async connect(options: ConnectOptions): Promise<CRBrowser> {
     return await WebSocketTransport.connect(options.wsEndpoint, transport => {
-      return CRBrowser.connect(transport, false, new RootLogger(options.logger), options.slowMo);
+      return CRBrowser.connect(transport, false, new RootLogger(options.logger), options);
     });
   }