diff --git a/core/modules/ckeditor5/tests/src/Nightwatch/Tests/ckEditor5EditorHeightTest.js b/core/modules/ckeditor5/tests/src/Nightwatch/Tests/ckEditor5EditorHeightTest.js
index d5285eb6abc753e7b135009df36b1204677858cb..a1b76110eb7a4954504dc4a6258f2663783b00c3 100644
--- a/core/modules/ckeditor5/tests/src/Nightwatch/Tests/ckEditor5EditorHeightTest.js
+++ b/core/modules/ckeditor5/tests/src/Nightwatch/Tests/ckEditor5EditorHeightTest.js
@@ -10,7 +10,7 @@ module.exports = {
       .drupalInstallModule('node', true);
 
     // Set fixed (desktop-ish) size to ensure a maximum viewport.
-    browser.resizeWindow(1920, 1080);
+    browser.window.resize(1920, 1080);
   },
   after(browser) {
     browser.drupalUninstall();
diff --git a/core/modules/toolbar/tests/src/Nightwatch/Tests/toolbarTest.js b/core/modules/toolbar/tests/src/Nightwatch/Tests/toolbarTest.js
index a87b3982780fadb0b5388ea9f38e91d8a534495f..cbba417abe3a3168b372d6801cf626c123b59a06 100644
--- a/core/modules/toolbar/tests/src/Nightwatch/Tests/toolbarTest.js
+++ b/core/modules/toolbar/tests/src/Nightwatch/Tests/toolbarTest.js
@@ -157,7 +157,7 @@ module.exports = {
       'is-active toolbar-tray-horizontal',
     );
     browser.assert.hasClass('#toolbar-administration', 'toolbar-oriented');
-    browser.setWindowSize(263, 900);
+    browser.window.setSize(263, 900);
     browser.assert.hasClass(
       itemAdministrationTray,
       'is-active toolbar-tray-vertical',
@@ -165,10 +165,10 @@ module.exports = {
     browser.assert.not.hasClass(itemAdministration, 'toolbar-oriented');
   },
   'Standard width toolbar breakpoint': (browser) => {
-    browser.setWindowSize(1000, 900);
+    browser.window.setSize(1000, 900);
     browser.waitForElementPresent(adminOrientationButton);
     browser.assert.hasClass('body', 'toolbar-fixed');
-    browser.setWindowSize(609, 900);
+    browser.window.setSize(609, 900);
     browser.assert.hasClass(
       itemAdministrationTray,
       'is-active toolbar-tray-vertical',
@@ -177,7 +177,7 @@ module.exports = {
   },
   'Wide toolbar breakpoint': (browser) => {
     browser.waitForElementPresent(adminOrientationButton);
-    browser.setWindowSize(975, 900);
+    browser.window.setSize(975, 900);
     browser.assert.hasClass(
       itemAdministrationTray,
       'is-active toolbar-tray-vertical',
@@ -312,11 +312,11 @@ module.exports = {
     );
   },
   'Locked toolbar vertical wide viewport': (browser) => {
-    browser.setWindowSize(1000, 900);
+    browser.window.setSize(1000, 900);
     browser.waitForElementPresent(adminOrientationButton);
     // eslint-disable-next-line no-unused-expressions
     browser.expect.element(adminOrientationButton).to.be.visible;
-    browser.setWindowSize(975, 900);
+    browser.window.setSize(975, 900);
     browser.assert.hasClass(
       itemAdministrationTray,
       'is-active toolbar-tray-vertical',
diff --git a/core/tests/Drupal/Nightwatch/Tests/Claro/claroPrimaryTabsTest.js b/core/tests/Drupal/Nightwatch/Tests/Claro/claroPrimaryTabsTest.js
index 53e208c509101ea4714fd0088f01c5be1de7b5dc..142d66da780e215a948fbc0f4734f58b2bfdcc4e 100644
--- a/core/tests/Drupal/Nightwatch/Tests/Claro/claroPrimaryTabsTest.js
+++ b/core/tests/Drupal/Nightwatch/Tests/Claro/claroPrimaryTabsTest.js
@@ -19,7 +19,7 @@ module.exports = {
         permissions: ['administer nodes'],
       })
       .drupalLogin({ name: 'user', password: '123' });
-    browser.setWindowSize(1600, 800);
+    browser.window.setSize(1600, 800);
   },
   after(browser) {
     browser.drupalUninstall();
@@ -33,8 +33,8 @@ module.exports = {
       .assert.not.visible(mobileToggle);
   },
   'Verify mobile tab display and click functionality': (browser) => {
-    browser
-      .setWindowSize(699, 800)
+    browser.window
+      .setSize(699, 800)
       .drupalRelativeURL('/node/1')
       .waitForElementVisible(primaryTabsWrapper)
       .assert.visible(activeTab)
diff --git a/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroDesktopMenuTest.js b/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroDesktopMenuTest.js
index dbb4c02a57aefc0fd1209073abcf79112ba75232..a529fa8e31f715957b35c5a96b45b318253caf1a 100644
--- a/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroDesktopMenuTest.js
+++ b/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroDesktopMenuTest.js
@@ -21,7 +21,7 @@ module.exports = {
           .click('[data-drupal-selector="edit-actions-submit"]')
           .waitForElementVisible('body');
       });
-    browser.setWindowSize(1600, 800);
+    browser.window.setSize(1600, 800);
   },
   after(browser) {
     browser.drupalUninstall();
diff --git a/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroPrimaryTabsTest.js b/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroPrimaryTabsTest.js
index 429fc1d1008efb864c5a4924f51a6864f4b9455f..3de6c09019c7113bd8493fc7e30cb18a8948fb63 100644
--- a/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroPrimaryTabsTest.js
+++ b/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroPrimaryTabsTest.js
@@ -18,7 +18,7 @@ module.exports = {
         permissions: ['administer nodes'],
       })
       .drupalLogin({ name: 'user', password: '123' });
-    browser.setWindowSize(1600, 800);
+    browser.window.setSize(1600, 800);
   },
   after(browser) {
     browser.drupalUninstall();
diff --git a/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroStickyHeaderToggleTest.js b/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroStickyHeaderToggleTest.js
index 9fe9b59725f349ea2e9cd9aa4d7ab800d7f00b07..d3ddedc47d999837cbb3bfd62f20b3e734c16ffa 100644
--- a/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroStickyHeaderToggleTest.js
+++ b/core/tests/Drupal/Nightwatch/Tests/Olivero/oliveroStickyHeaderToggleTest.js
@@ -9,7 +9,7 @@ module.exports = {
         'core/tests/Drupal/TestSite/TestSiteOliveroInstallTestScript.php',
       installProfile: 'minimal',
     });
-    browser.setWindowSize(1400, 800);
+    browser.window.setSize(1400, 800);
   },
   after(browser) {
     browser.drupalUninstall();