diff --git a/.circleci/config.yml b/.circleci/config.yml
index aed77c93e..17390d89f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -159,8 +159,11 @@ jobs:
       - save_cache: *save_yarn_cache
       - run: *restore_dist_folders
       - run:
-          name: Cypress test Actions
-          command: yarn run cy:run
+          name: Cypress test on Chrome
+          command: yarn run cy:run:chrome
+      - run:
+          name: Cypress test on Firefox
+          command: yarn run cy:run:firefox
 
 workflows:
   version: 2
diff --git a/.eslintrc.js b/.eslintrc.js
index 67b0a180b..38ffe4a14 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -68,6 +68,7 @@ module.exports = {
       },
       rules: {
         'jest/expect-expect': 0,
+        'jest/valid-expect': 0,
         'spaced-comment': 0,
         '@typescript-eslint/triple-slash-reference': 0,
       },
diff --git a/bundlesize.config.json b/bundlesize.config.json
index b8e8f9d75..c3ac3fa35 100644
--- a/bundlesize.config.json
+++ b/bundlesize.config.json
@@ -10,7 +10,7 @@
     },
     {
       "path": "packages/docsearch-js/dist/umd/index.js",
-      "maxSize": "28.20 kB"
+      "maxSize": "28.25 kB"
     }
   ]
 }
diff --git a/cypress/integration/search/actions.spec.ts b/cypress/integration/search/actions.spec.ts
index 162e490d1..ac1d823ed 100644
--- a/cypress/integration/search/actions.spec.ts
+++ b/cypress/integration/search/actions.spec.ts
@@ -138,3 +138,33 @@ describe('Recent and Favorites', () => {
     cy.contains('No recent searches').should('be.visible');
   });
 });
+
+describe('Navigator', () => {
+  it(
+    'Use correct navigator to detect Apple device on chrome',
+    { browser: 'chrome' },
+    () => {
+      expect((navigator as any).userAgentData).not.be.undefined;
+      expect(navigator.platform).not.to.be.undefined;
+
+      cy.visit(Cypress.config().baseUrl!);
+
+      cy.get('body').type('{meta}k');
+      cy.modalIsVisibleAndFocused();
+    }
+  );
+
+  it(
+    'Use correct navigator to detect Apple device on non chrome browser',
+    { browser: '!chrome' },
+    () => {
+      expect((navigator as any).userAgentData).to.be.undefined;
+      expect(navigator.platform).not.to.be.undefined;
+
+      cy.visit(Cypress.config().baseUrl!);
+
+      cy.get('body').type('{meta}k');
+      cy.modalIsVisibleAndFocused();
+    }
+  );
+});
diff --git a/package.json b/package.json
index 274c4d886..6133777eb 100644
--- a/package.json
+++ b/package.json
@@ -18,10 +18,8 @@
     "build": "lerna run build --scope @docsearch/*",
     "cy:clean": "rm -rf cypress/screenshots",
     "cy:info": "cypress info",
-    "cy:run:chrome": "yarn run cy:run --browser chrome",
-    "cy:run:edge": "yarn run cy:run --browser edge",
-    "cy:run:firefox": "yarn run cy:run --browser firefox",
-    "cy:run": "start-server-and-test 'yarn website:test' http://localhost:3000 'cypress run --spec 'cypress/integration/**/*' --headless'",
+    "cy:run:chrome": "start-server-and-test 'yarn website:test' http://localhost:3000 'cypress run --browser chrome --spec 'cypress/integration/**/*' --headless'",
+    "cy:run:firefox": "start-server-and-test 'yarn website:test' http://localhost:3000 'cypress run --browser firefox --spec 'cypress/integration/**/*' --headless'",
     "cy:verify": "cypress verify",
     "lint:css": "stylelint **/src/**/*.css",
     "lint": "eslint --ext .js,.ts,.tsx .",
diff --git a/packages/docsearch-react/src/DocSearchButton.tsx b/packages/docsearch-react/src/DocSearchButton.tsx
index 57d62347f..645c32f7f 100644
--- a/packages/docsearch-react/src/DocSearchButton.tsx
+++ b/packages/docsearch-react/src/DocSearchButton.tsx
@@ -16,7 +16,11 @@ const ACTION_KEY_DEFAULT = 'Ctrl' as const;
 const ACTION_KEY_APPLE = '⌘' as const;
 
 function isAppleDevice() {
-  return /(Mac|iPhone|iPod|iPad)/i.test(navigator.platform);
+  return /(Mac|iPhone|iPod|iPad)/i.test(
+    // `userAgentData` is not supported everywhere and still experimental
+    // so types are not provided yet.
+    (navigator as any)?.userAgentData?.platform || navigator.platform
+  );
 }
 
 export const DocSearchButton = React.forwardRef<
diff --git a/packages/docsearch-react/src/__tests__/api.test.tsx b/packages/docsearch-react/src/__tests__/api.test.tsx
index 656ab5fc9..53b85bfc1 100644
--- a/packages/docsearch-react/src/__tests__/api.test.tsx
+++ b/packages/docsearch-react/src/__tests__/api.test.tsx
@@ -34,7 +34,7 @@ function noResultSearch(_queries: any, _requestOptions?: any): Promise<any> {
 }
 
 describe('api', () => {
-  let container: HTMLDivElement;
+  let container: HTMLDivElement | null;
 
   const docSearchSelector = '.DocSearch';
 
@@ -44,8 +44,10 @@ describe('api', () => {
   });
 
   afterEach(() => {
-    document.body.removeChild(container);
-    container = null;
+    if (container) {
+      document.body.removeChild(container);
+      container = null;
+    }
   });
 
   it('renders with minimal parameters', () => {
@@ -68,10 +70,10 @@ describe('api', () => {
       );
       expect(document.querySelector(docSearchSelector)).toBeInTheDocument();
       expect(
-        document.querySelector('.DocSearch-Button-Placeholder').innerHTML
+        document.querySelector('.DocSearch-Button-Placeholder')!.innerHTML
       ).toBe('Recherche');
       expect(
-        document.querySelector('.DocSearch-Button').getAttribute('aria-label')
+        document.querySelector('.DocSearch-Button')!.getAttribute('aria-label')
       ).toBe('Recherche');
     });
 
@@ -166,17 +168,17 @@ describe('api', () => {
         fireEvent.click(await screen.findByText('Search'));
       });
 
-      expect(document.querySelector('.DocSearch-Cancel').innerHTML).toBe(
+      expect(document.querySelector('.DocSearch-Cancel')!.innerHTML).toBe(
         'Annuler'
       );
       expect(
-        document.querySelector('.DocSearch-Cancel').getAttribute('aria-label')
+        document.querySelector('.DocSearch-Cancel')!.getAttribute('aria-label')
       ).toBe('Annuler');
       expect(
-        document.querySelector('.DocSearch-Reset').getAttribute('title')
+        document.querySelector('.DocSearch-Reset')!.getAttribute('title')
       ).toBe('Effacer');
       expect(
-        document.querySelector('.DocSearch-Reset').getAttribute('aria-label')
+        document.querySelector('.DocSearch-Reset')!.getAttribute('aria-label')
       ).toBe('Effacer');
     });
 
@@ -290,9 +292,10 @@ describe('api', () => {
       });
 
       expect(screen.getByText(/No results for/)).toBeInTheDocument();
+
       const link = document.querySelector('.DocSearch-Help a');
       expect(link).toBeInTheDocument();
-      expect(link.getAttribute('href')).toBe(
+      expect(link!.getAttribute('href')).toBe(
         'https://github.com/algolia/docsearch/issues/new?title=q'
       );
     });