diff --git a/packages/ui/components/core/test/SlotMixin.test.js b/packages/ui/components/core/test/SlotMixin.test.js
index ffdce2c0a..c6bb70779 100644
--- a/packages/ui/components/core/test/SlotMixin.test.js
+++ b/packages/ui/components/core/test/SlotMixin.test.js
@@ -273,13 +273,13 @@ describe('SlotMixin', () => {
 
       el._focusableNode._buttonNode.focus();
 
-      expect(el._focusableNode.shadowRoot.activeElement).to.equal(el._focusableNode._buttonNode);
+      expect(isActiveElement(el._focusableNode._buttonNode, { deep: true })).to.be.true;
 
       el.currentValue = 1;
       await el.updateComplete;
 
       expect(isActiveElement(el._focusableNode)).to.be.true;
-      expect(el._focusableNode.shadowRoot.activeElement).to.equal(el._focusableNode._buttonNode);
+      expect(isActiveElement(el._focusableNode._buttonNode, { deep: true })).to.be.true;
     });
 
     it('allows for rerendering complex shadow root into slot as a direct child', async () => {
@@ -342,7 +342,7 @@ describe('SlotMixin', () => {
       await el.updateComplete;
 
       expect(isActiveElement(el._focusableNode)).to.be.true;
-      expect(el._focusableNode.shadowRoot.activeElement).to.equal(el._focusableNode._buttonNode);
+      expect(isActiveElement(el._focusableNode._buttonNode, { deep: true })).to.be.true;
     });
 
     describe('firstRenderOnConnected (for backwards compatibility)', () => {
diff --git a/packages/ui/components/form-core/test-suites/NativeTextFieldMixin.suite.js b/packages/ui/components/form-core/test-suites/NativeTextFieldMixin.suite.js
index d3249a390..c4af58bfd 100644
--- a/packages/ui/components/form-core/test-suites/NativeTextFieldMixin.suite.js
+++ b/packages/ui/components/form-core/test-suites/NativeTextFieldMixin.suite.js
@@ -51,7 +51,7 @@ export function runNativeTextFieldMixinSuite(customConfig) {
       expect(_inputNode.selectionEnd).to.equal(2);
     });
 
-    it('move focus to a next focusable element after writing some text', async () => {
+    it('moves focus to a next focusable element after writing some text', async () => {
       const el = /** @type {NativeTextFieldClass} */ (await fixture(html`<${tag}></${tag}>`));
       // @ts-ignore [allow-protected] in test
       const setValueAndPreserveCaretSpy = spy(el, '_setValueAndPreserveCaret');
@@ -59,12 +59,8 @@ export function runNativeTextFieldMixinSuite(customConfig) {
       await triggerFocusFor(el);
       await el.updateComplete;
       expect(isActiveElement(_inputNode)).to.be.true;
-      await sendKeys({
-        press: 'h',
-      });
-      await sendKeys({
-        press: 'Tab',
-      });
+      await sendKeys({ press: 'h' });
+      await sendKeys({ press: 'Tab' });
 
       expect(setValueAndPreserveCaretSpy.calledOnce).to.be.false;
 
@@ -73,7 +69,7 @@ export function runNativeTextFieldMixinSuite(customConfig) {
         return;
       }
 
-      expect(document.activeElement).to.not.equal(_inputNode);
+      expect(isActiveElement(_inputNode)).to.be.false;
     });
   });
 }
diff --git a/packages/ui/components/form-core/test/FocusMixin.test.js b/packages/ui/components/form-core/test/FocusMixin.test.js
index 3638e55f8..fb3bc2b1b 100644
--- a/packages/ui/components/form-core/test/FocusMixin.test.js
+++ b/packages/ui/components/form-core/test/FocusMixin.test.js
@@ -1,7 +1,9 @@
-import { LitElement } from 'lit';
 import { defineCE, expect, fixture, html, oneEvent, unsafeStatic } from '@open-wc/testing';
-import sinon from 'sinon';
 import { FocusMixin } from '@lion/ui/form-core.js';
+import { LitElement } from 'lit';
+import sinon from 'sinon';
+
+import { isActiveElement } from '../../core/test-helpers/isActiveElement.js';
 
 const windowWithOptionalPolyfill =
   /** @type {Window & typeof globalThis & {applyFocusVisiblePolyfill?: function}} */ (window);
@@ -84,9 +86,9 @@ describe('FocusMixin', () => {
     const { _focusableNode } = el;
 
     el.focus();
-    expect(document.activeElement === _focusableNode).to.be.true;
+    expect(isActiveElement(_focusableNode)).to.be.true;
     el.blur();
-    expect(document.activeElement === _focusableNode).to.be.false;
+    expect(isActiveElement(_focusableNode)).to.be.false;
   });
 
   it('has an attribute focused when focused', async () => {
diff --git a/packages/ui/components/input-tel-dropdown/test-suites/LionInputTelDropdown.suite.js b/packages/ui/components/input-tel-dropdown/test-suites/LionInputTelDropdown.suite.js
index 8701fc518..750c7c3f8 100644
--- a/packages/ui/components/input-tel-dropdown/test-suites/LionInputTelDropdown.suite.js
+++ b/packages/ui/components/input-tel-dropdown/test-suites/LionInputTelDropdown.suite.js
@@ -1,22 +1,24 @@
-import { PhoneUtilManager } from '@lion/ui/input-tel.js';
 import { mockPhoneUtilManager, restorePhoneUtilManager } from '@lion/ui/input-tel-test-helpers.js';
+import { mimicUserChangingDropdown } from '@lion/ui/input-tel-dropdown-test-helpers.js';
+import { LionInputTelDropdown } from '@lion/ui/input-tel-dropdown.js';
+import { PhoneUtilManager } from '@lion/ui/input-tel.js';
+import sinon from 'sinon';
 import {
+  fixtureSync as _fixtureSync,
+  fixture as _fixture,
+  unsafeStatic,
   aTimeout,
   defineCE,
   expect,
-  fixture as _fixture,
-  fixtureSync as _fixtureSync,
   html,
-  unsafeStatic,
 } from '@open-wc/testing';
-import sinon from 'sinon';
-import { LionInputTelDropdown } from '@lion/ui/input-tel-dropdown.js';
-import { mimicUserChangingDropdown } from '@lion/ui/input-tel-dropdown-test-helpers.js';
+
+import { isActiveElement } from '../../core/test-helpers/isActiveElement.js';
 
 /**
- * @typedef {import('lit').TemplateResult} TemplateResult
- * @typedef {HTMLSelectElement|HTMLElement & {modelValue:string}} DropdownElement
  * @typedef {import('../types/index.js').TemplateDataForDropdownInputTel} TemplateDataForDropdownInputTel
+ * @typedef {HTMLSelectElement|HTMLElement & {modelValue:string}} DropdownElement
+ * @typedef {import('lit').TemplateResult} TemplateResult
  */
 
 const fixture = /** @type {(arg: string | TemplateResult) => Promise<LionInputTelDropdown>} */ (
@@ -206,12 +208,14 @@ export function runInputTelDropdownSuite({ klass } = { klass: LionInputTelDropdo
 
       it('syncs disabled attribute to dropdown', async () => {
         const el = await fixture(html` <${tag} disabled></${tag}> `);
-        expect(el.refs.dropdown.value?.hasAttribute('disabled')).to.be.true;
+        expect(/** @type {HTMLElement} */ (el.refs.dropdown.value)?.hasAttribute('disabled')).to.be
+          .true;
       });
 
       it('disables dropdown on readonly', async () => {
         const el = await fixture(html` <${tag} readonly></${tag}> `);
-        expect(el.refs.dropdown.value?.hasAttribute('disabled')).to.be.true;
+        expect(/** @type {HTMLElement} */ (el.refs.dropdown.value)?.hasAttribute('disabled')).to.be
+          .true;
       });
 
       it('renders to prefix slot in light dom', async () => {
@@ -332,7 +336,7 @@ export function runInputTelDropdownSuite({ klass } = { klass: LionInputTelDropdo
         mimicUserChangingDropdown(dropdownElement, 'BE');
         await el.updateComplete;
         // @ts-expect-error [allow-protected-in-tests]
-        expect(el._inputNode).to.not.equal(document.activeElement);
+        expect(isActiveElement(el._inputNode)).to.be.false;
       });
     });
 
diff --git a/packages/ui/components/input-tel-dropdown/test/LionInputTelDropdown.test.js b/packages/ui/components/input-tel-dropdown/test/LionInputTelDropdown.test.js
index e1e6a8558..3ec5629ab 100644
--- a/packages/ui/components/input-tel-dropdown/test/LionInputTelDropdown.test.js
+++ b/packages/ui/components/input-tel-dropdown/test/LionInputTelDropdown.test.js
@@ -1,20 +1,22 @@
+import { mimicUserChangingDropdown } from '@lion/ui/input-tel-dropdown-test-helpers.js';
+import { runInputTelDropdownSuite } from '@lion/ui/input-tel-dropdown-test-suites.js';
+import { LionInputTelDropdown } from '@lion/ui/input-tel-dropdown.js';
 import { runInputTelSuite } from '@lion/ui/input-tel-test-suites.js';
+import { aTimeout, expect, fixture } from '@open-wc/testing';
+import { LionSelectRich } from '@lion/ui/select-rich.js';
 import { repeat } from 'lit/directives/repeat.js';
+import { LionOption } from '@lion/ui/listbox.js';
 import { ref } from 'lit/directives/ref.js';
 import { html } from 'lit';
-import { aTimeout, expect, fixture } from '@open-wc/testing';
-import { LionInputTelDropdown } from '@lion/ui/input-tel-dropdown.js';
-import { LionOption } from '@lion/ui/listbox.js';
-import { LionSelectRich } from '@lion/ui/select-rich.js';
-import { runInputTelDropdownSuite } from '@lion/ui/input-tel-dropdown-test-suites.js';
-import { mimicUserChangingDropdown } from '@lion/ui/input-tel-dropdown-test-helpers.js';
+
+import { isActiveElement } from '../../core/test-helpers/isActiveElement.js';
 import { ScopedElementsMixin } from '../../core/src/ScopedElementsMixin.js';
 
 /**
- * @typedef {import('lit').TemplateResult} TemplateResult
- * @typedef {HTMLSelectElement|HTMLElement & {modelValue:string}} DropdownElement
  * @typedef {import('../types/index.js').TemplateDataForDropdownInputTel} TemplateDataForDropdownInputTel
+ * @typedef {HTMLSelectElement|HTMLElement & {modelValue:string}} DropdownElement
  * @typedef {import('../types/index.js').RegionMeta} RegionMeta
+ * @typedef {import('lit').TemplateResult} TemplateResult
  */
 
 class WithFormControlInputTelDropdown extends ScopedElementsMixin(LionInputTelDropdown) {
@@ -114,7 +116,7 @@ describe('WithFormControlInputTelDropdown', () => {
       await el.updateComplete;
       await aTimeout(0);
       // @ts-expect-error [allow-protected-in-tests]
-      expect(el._inputNode).to.equal(document.activeElement);
+      expect(isActiveElement(el._inputNode)).to.be.true;
     }
   });
 
@@ -167,7 +169,7 @@ describe('WithFormControlInputTelDropdown', () => {
       await el.updateComplete;
       await aTimeout(0);
       // @ts-expect-error [allow-protected-in-tests]
-      expect(el._inputNode).to.not.equal(document.activeElement);
+      expect(isActiveElement(el._inputNode)).to.be.false;
     }
   });
 });
diff --git a/packages/ui/components/select-rich/test/lion-select-rich.test.js b/packages/ui/components/select-rich/test/lion-select-rich.test.js
index fb7681bfa..e131bc2fb 100644
--- a/packages/ui/components/select-rich/test/lion-select-rich.test.js
+++ b/packages/ui/components/select-rich/test/lion-select-rich.test.js
@@ -31,10 +31,11 @@ const fixture = /** @type {(arg: TemplateResult) => Promise<LionSelectRich>} */
 describe('lion-select-rich', () => {
   it('clicking the label should focus the invoker', async () => {
     const el = await fixture(html` <lion-select-rich label="foo"> </lion-select-rich> `);
-    expect(document.activeElement === document.body).to.be.true;
+    expect(isActiveElement(document.body)).to.be.true;
+
     const { _labelNode, _invokerNode } = getSelectRichMembers(el);
     _labelNode.click();
-    expect(document.activeElement === _invokerNode).to.be.true;
+    expect(isActiveElement(_invokerNode)).to.be.true;
   });
 
   it('has an attribute focused when focused', async () => {
@@ -276,14 +277,14 @@ describe('lion-select-rich', () => {
 
       await _overlayCtrl.show();
       await el.updateComplete;
-      expect(document.activeElement === _listboxNode).to.be.true;
-      expect(document.activeElement === _invokerNode).to.be.false;
+      expect(isActiveElement(_listboxNode)).to.be.true;
+      expect(isActiveElement(_invokerNode)).to.be.false;
 
       el.opened = false;
       await el.updateComplete;
       await el.updateComplete; // safari takes a little longer
-      expect(document.activeElement === _listboxNode).to.be.false;
-      expect(document.activeElement === _invokerNode).to.be.true;
+      expect(isActiveElement(_listboxNode)).to.be.false;
+      expect(isActiveElement(_invokerNode)).to.be.true;
     });
 
     it('opens the listbox with checked option as active', async () => {
@@ -472,7 +473,7 @@ describe('lion-select-rich', () => {
         <lion-select-rich .config=${{ trapsKeyboardFocus: true }}></lion-select-rich>
       `);
       const { _listboxNode } = getSelectRichMembers(el);
-      expect(document.activeElement).to.not.equal(_listboxNode);
+      expect(isActiveElement(_listboxNode)).to.be.false;
 
       el.opened = true;
       await el.updateComplete;
@@ -481,7 +482,7 @@ describe('lion-select-rich', () => {
       el.opened = false;
       await el.updateComplete;
       await el.updateComplete; // safari takes a little longer
-      expect(document.activeElement).to.not.equal(_listboxNode);
+      expect(isActiveElement(_listboxNode)).to.be.false;
     });
   });
 
diff --git a/packages/ui/components/switch/test/lion-switch.test.js b/packages/ui/components/switch/test/lion-switch.test.js
index 359f846a9..79ee68192 100644
--- a/packages/ui/components/switch/test/lion-switch.test.js
+++ b/packages/ui/components/switch/test/lion-switch.test.js
@@ -69,7 +69,7 @@ describe('lion-switch', () => {
     const { _inputNode, _labelNode } = getSwitchMembers(el);
 
     _labelNode.click();
-    expect(document.activeElement).to.not.equal(_inputNode);
+    expect(isActiveElement(_inputNode)).to.be.false;
   });
 
   it('should sync its "disabled" state to child button', async () => {
diff --git a/packages/ui/components/tabs/test/lion-tabs.test.js b/packages/ui/components/tabs/test/lion-tabs.test.js
index d7a4a929e..0a3aa75c0 100644
--- a/packages/ui/components/tabs/test/lion-tabs.test.js
+++ b/packages/ui/components/tabs/test/lion-tabs.test.js
@@ -2,6 +2,8 @@ import { expect, fixture } from '@open-wc/testing';
 import { html } from 'lit/static-html.js';
 import sinon from 'sinon';
 
+import { isActiveElement } from '../../core/test-helpers/isActiveElement.js';
+
 /**
  * @typedef {import('../src/LionTabs.js').LionTabs} LionTabs
  */
@@ -397,9 +399,11 @@ describe('<lion-tabs>', () => {
         `)
       );
 
+      const secondTab = /** @type {HTMLElement} */ (
+        el.querySelector('[slot="tab"]:nth-of-type(2)')
+      );
       el.selectedIndex = 1;
-      expect(el.querySelector('[slot="tab"]:nth-of-type(2)') === document.activeElement).to.be
-        .false;
+      expect(isActiveElement(secondTab)).to.be.false;
     });
 
     it('does not focus a tab on firstUpdate', async () => {
@@ -414,7 +418,7 @@ describe('<lion-tabs>', () => {
         `)
       );
       const tabs = Array.from(el.children).filter(child => child.slot === 'tab');
-      expect(tabs.some(tab => tab === document.activeElement)).to.be.false;
+      expect(tabs.some(tab => isActiveElement(tab))).to.be.false;
     });
 
     it('focuses on a tab when setting with _setSelectedIndexWithFocus method', async () => {
@@ -429,9 +433,12 @@ describe('<lion-tabs>', () => {
         `)
       );
 
+      const secondTab = /** @type {HTMLElement} */ (
+        el.querySelector('[slot="tab"]:nth-of-type(2)')
+      );
       // @ts-ignore : this el is LionTabs
       el._setSelectedIndexWithFocus(1);
-      expect(el.querySelector('[slot="tab"]:nth-of-type(2)') === document.activeElement).to.be.true;
+      expect(isActiveElement(secondTab)).to.be.true;
     });
   });
 
@@ -448,7 +455,7 @@ describe('<lion-tabs>', () => {
     );
     const secondTab = /** @type {Element} */ (el.querySelector('[slot="tab"]:nth-of-type(2)'));
     secondTab.dispatchEvent(new MouseEvent('click'));
-    expect(secondTab === document.activeElement).to.be.true;
+    expect(isActiveElement(secondTab)).to.be.true;
   });
 
   describe('Accessibility', () => {