diff --git a/shell/browser/api/electron_api_web_contents.cc b/shell/browser/api/electron_api_web_contents.cc
index 6e64b7bdac241..cb66a8d96308a 100644
--- a/shell/browser/api/electron_api_web_contents.cc
+++ b/shell/browser/api/electron_api_web_contents.cc
@@ -1334,12 +1334,6 @@ bool WebContents::HandleKeyboardEvent(
 bool WebContents::PlatformHandleKeyboardEvent(
     content::WebContents* source,
     const content::NativeWebKeyboardEvent& event) {
-  // Escape exits tabbed fullscreen mode.
-  if (event.windows_key_code == ui::VKEY_ESCAPE && is_html_fullscreen()) {
-    ExitFullscreenModeForTab(source);
-    return true;
-  }
-
   // Check if the webContents has preferences and to ignore shortcuts
   auto* web_preferences = WebContentsPreferences::From(source);
   if (web_preferences && web_preferences->ShouldIgnoreMenuShortcuts())
diff --git a/shell/browser/api/electron_api_web_contents_mac.mm b/shell/browser/api/electron_api_web_contents_mac.mm
index e93597e996380..bf1c69dbf5537 100644
--- a/shell/browser/api/electron_api_web_contents_mac.mm
+++ b/shell/browser/api/electron_api_web_contents_mac.mm
@@ -42,12 +42,6 @@ - (void)redispatchKeyEvent:(NSEvent*)event;
       event.GetType() == content::NativeWebKeyboardEvent::Type::kChar)
     return false;
 
-  // Escape exits tabbed fullscreen mode.
-  if (event.windows_key_code == ui::VKEY_ESCAPE && is_html_fullscreen()) {
-    ExitFullscreenModeForTab(source);
-    return true;
-  }
-
   // Check if the webContents has preferences and to ignore shortcuts
   auto* web_preferences = WebContentsPreferences::From(source);
   if (web_preferences && web_preferences->ShouldIgnoreMenuShortcuts())
diff --git a/spec/chromium-spec.ts b/spec/chromium-spec.ts
index 98973558e9e16..6d21d1a0c7f0e 100644
--- a/spec/chromium-spec.ts
+++ b/spec/chromium-spec.ts
@@ -606,6 +606,63 @@ describe('chromium features', () => {
     });
   });
 
+  describe('navigator.keyboard', () => {
+    afterEach(closeAllWindows);
+
+    it('getLayoutMap() should return a KeyboardLayoutMap object', async () => {
+      const w = new BrowserWindow({ show: false });
+      await w.loadFile(path.join(fixturesPath, 'pages', 'blank.html'));
+      const size = await w.webContents.executeJavaScript(`
+        navigator.keyboard.getLayoutMap().then(map => map.size)
+      `);
+
+      expect(size).to.be.a('number');
+    });
+
+    it('should lock the keyboard', async () => {
+      const w = new BrowserWindow({ show: false });
+      await w.loadFile(path.join(fixturesPath, 'pages', 'modal.html'));
+
+      // Test that without lock, with ESC:
+      // - the window leaves fullscreen
+      // - the dialog is not closed
+      const enterFS1 = once(w, 'enter-full-screen');
+      await w.webContents.executeJavaScript('document.body.requestFullscreen()', true);
+      await enterFS1;
+
+      await w.webContents.executeJavaScript('document.getElementById(\'favDialog\').showModal()', true);
+      const open1 = await w.webContents.executeJavaScript('document.getElementById(\'favDialog\').open');
+      expect(open1).to.be.true();
+
+      w.webContents.sendInputEvent({ type: 'keyDown', keyCode: 'Escape' });
+      await setTimeout(1000);
+      const openAfter1 = await w.webContents.executeJavaScript('document.getElementById(\'favDialog\').open');
+      expect(openAfter1).to.be.true();
+      expect(w.isFullScreen()).to.be.false();
+
+      // Test that with lock, with ESC:
+      // - the window does not leave fullscreen
+      // - the dialog is closed
+      const enterFS2 = once(w, 'enter-full-screen');
+      await w.webContents.executeJavaScript(`
+        navigator.keyboard.lock(['Escape']);
+        document.body.requestFullscreen();
+      `, true);
+
+      await enterFS2;
+
+      await w.webContents.executeJavaScript('document.getElementById(\'favDialog\').showModal()', true);
+      const open2 = await w.webContents.executeJavaScript('document.getElementById(\'favDialog\').open');
+      expect(open2).to.be.true();
+
+      w.webContents.sendInputEvent({ type: 'keyDown', keyCode: 'Escape' });
+      await setTimeout(1000);
+      const openAfter2 = await w.webContents.executeJavaScript('document.getElementById(\'favDialog\').open');
+      expect(openAfter2).to.be.false();
+      expect(w.isFullScreen()).to.be.true();
+    });
+  });
+
   describe('navigator.languages', () => {
     it('should return the system locale only', async () => {
       const appLocale = app.getLocale();
diff --git a/spec/fixtures/pages/modal.html b/spec/fixtures/pages/modal.html
new file mode 100644
index 0000000000000..28b9e6b2c95e2
--- /dev/null
+++ b/spec/fixtures/pages/modal.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<body>
+  <dialog id="favDialog">
+    <form>
+      <p>
+        <label>
+          Favorite animal:
+          <select>
+            <option value="default">Choose…</option>
+            <option>Brine shrimp</option>
+            <option>Red panda</option>
+            <option>Spider monkey</option>
+          </select>
+        </label>
+      </p>
+      <div>
+        <button value="cancel" formmethod="dialog">Cancel</button>
+        <button id="confirmBtn" value="default">Confirm</button>
+      </div>
+    </form>
+  </dialog>
+</body>
+
+</html>
\ No newline at end of file
diff --git a/spec/webview-spec.ts b/spec/webview-spec.ts
index 17b222ef40cbb..7563fef1a54c3 100644
--- a/spec/webview-spec.ts
+++ b/spec/webview-spec.ts
@@ -547,17 +547,16 @@ describe('<webview> tag', function () {
       await close;
     });
 
-    // Sending ESC via sendInputEvent only works on Windows.
-    ifit(process.platform === 'win32')('pressing ESC should unfullscreen window', async () => {
+    it('pressing ESC should unfullscreen window', async () => {
       const [w, webview] = await loadWebViewWindow();
       const enterFullScreen = once(w, 'enter-full-screen');
       await webview.executeJavaScript('document.getElementById("div").requestFullscreen()', true);
       await enterFullScreen;
 
       const leaveFullScreen = once(w, 'leave-full-screen');
-      w.webContents.sendInputEvent({ type: 'keyDown', keyCode: 'Escape' });
+      webview.sendInputEvent({ type: 'keyDown', keyCode: 'Escape' });
       await leaveFullScreen;
-      await setTimeout();
+      await setTimeout(1000);
       expect(w.isFullScreen()).to.be.false();
 
       const close = once(w, 'closed');