diff --git a/.changeset/fresh-otp-preparation.md b/.changeset/fresh-otp-preparation.md
new file mode 100644
index 00000000000..5dcd7745562
--- /dev/null
+++ b/.changeset/fresh-otp-preparation.md
@@ -0,0 +1,5 @@
+---
+'@clerk/mosaic': patch
+---
+
+Preserve verification code delivery errors and resend cooldowns when navigating to other methods or help and back in UserProfile.
diff --git a/packages/mosaic/src/__tests__/feature/fake-fapi-isolation.feature.test.tsx b/packages/mosaic/src/__tests__/feature/fake-fapi-isolation.feature.test.tsx
index 9ed44df552f..f73dd43ba0c 100644
--- a/packages/mosaic/src/__tests__/feature/fake-fapi-isolation.feature.test.tsx
+++ b/packages/mosaic/src/__tests__/feature/fake-fapi-isolation.feature.test.tsx
@@ -44,4 +44,17 @@ describe('fake FAPI isolation between tests', () => {
     expect(await clerk.session?.getToken()).toEqual(expect.any(String));
     expect(document.cookie).not.toMatch(/(?:^|; )__session/);
   });
+
+  it('clears authentication cookies when the test iframe leaves the page', async () => {
+    const user = fapiUser({ id: 'user_1' });
+    serveFapi({ client: fapiClient([fapiSession({ id: 'sess_1', user })]) });
+    await renderWithClerk(<div />, { standardBrowser: true });
+    window.dispatchEvent(new Event('focus'));
+    await new Promise(resolve => setTimeout(resolve, 0));
+    expect(document.cookie).toContain('__session=');
+
+    window.dispatchEvent(new PageTransitionEvent('pagehide'));
+
+    expect(document.cookie).toBe('');
+  });
 });
diff --git a/packages/mosaic/src/features/reverification/__tests__/reverification.feature.test.tsx b/packages/mosaic/src/features/reverification/__tests__/reverification.feature.test.tsx
index 8fb2a015672..c010c91de98 100644
--- a/packages/mosaic/src/features/reverification/__tests__/reverification.feature.test.tsx
+++ b/packages/mosaic/src/features/reverification/__tests__/reverification.feature.test.tsx
@@ -665,6 +665,170 @@ describe('Reverification', () => {
       expect(screen.getByRole('button', { name: /Resend/ })).toBeEnabled();
     });
 
+    describe('when the user leaves the step while the code is being sent', () => {
+      async function startSendingCode(
+        firstFactors: SignInFirstFactorJSON[] = [emailFactor, passwordFactor],
+        action = guardedAction(),
+      ) {
+        await renderReverification(action, verificationSeed({ firstFactors }, { environment: preferring('otp') }));
+        const prepare = holdRequests('post', PREPARE_FIRST);
+        const user = await startVerification();
+        expect(await screen.findByText(STEP.emailCode)).toBeVisible();
+        await waitFor(() => expect(prepare.requests).toHaveLength(1));
+        return { prepare, user };
+      }
+
+      const back = (user: User) => user.click(screen.getByRole('button', { name: 'Back' }));
+
+      it.each(['picker', 'help'] as const)(
+        'shows a failure that arrives on the %s step once the user returns',
+        async step => {
+          const { prepare, user } = await startSendingCode();
+          await useAnotherMethod(user);
+          if (step === 'help') {
+            await user.click(await screen.findByRole('button', { name: 'Get help' }));
+            expect(await screen.findByText(/If you have trouble verifying your account/)).toBeVisible();
+          }
+
+          prepare.fail('preparation_failed', 'Could not send your code');
+          await settle();
+          if (step === 'help') {
+            expect(screen.getByText(/If you have trouble verifying your account/)).toBeVisible();
+            await back(user);
+          }
+          expect(await screen.findByRole('button', { name: 'Continue with your password' })).toBeVisible();
+          await back(user);
+
+          // The step shows the failure and the user can resend immediately
+          expect(await screen.findByText(STEP.emailCode)).toBeVisible();
+          expect(await screen.findByText('Could not send your code')).toBeVisible();
+          expect(prepare.requests).toHaveLength(1);
+          const retry = holdRequests('post', PREPARE_FIRST);
+          await user.click(screen.getByRole('button', { name: /Resend/ }));
+          await waitFor(() => expect(retry.requests).toHaveLength(1));
+          expect(screen.queryByText('Could not send your code')).toBeNull();
+          expect(screen.getByRole('button', { name: /Resend \(\d+\)/ })).toBeDisabled();
+          retry.release();
+        },
+      );
+
+      it('keeps the cooldown of a code sent while the picker is open', async () => {
+        const { prepare, user } = await startSendingCode();
+        await useAnotherMethod(user);
+
+        prepare.release();
+        await settle();
+        expect(screen.getByRole('button', { name: 'Continue with your password' })).toBeVisible();
+        await back(user);
+
+        expect(await screen.findByText(STEP.emailCode)).toBeVisible();
+        expect(screen.getByRole('button', { name: /Resend \(\d+\)/ })).toBeDisabled();
+        expect(prepare.requests).toHaveLength(1);
+      });
+
+      it.each(['sent', 'not sent'] as const)(
+        'holds a submit made after returning from the picker until the code is %s',
+        async result => {
+          const { prepare, user } = await startSendingCode();
+          const attempt = holdRequests('post', ATTEMPT_FIRST);
+          await useAnotherMethod(user);
+          await back(user);
+          expect(await screen.findByText(STEP.emailCode)).toBeVisible();
+
+          await pasteCode(user, CODE);
+          await settle();
+          expect(attempt.requests).toHaveLength(0);
+
+          if (result === 'sent') {
+            prepare.release();
+            await waitFor(() => expect(attempt.requests).toHaveLength(1));
+            attempt.release();
+            await untilResolved();
+          } else {
+            prepare.fail('preparation_failed', 'Could not send your code');
+            expect(await screen.findByText('Could not send your code')).toBeVisible();
+            expect(attempt.requests).toHaveLength(0);
+            expect(screen.getByRole('button', { name: /Resend/ })).toBeEnabled();
+            attempt.release();
+          }
+          expect(prepare.requests).toHaveLength(1);
+        },
+      );
+
+      it('drops a held submit when the user opens the picker', async () => {
+        const { prepare, user } = await startSendingCode();
+        const attempt = holdRequests('post', ATTEMPT_FIRST);
+        await pasteCode(user, CODE);
+        await useAnotherMethod(user);
+
+        prepare.release();
+        await settle();
+        expect(screen.getByRole('button', { name: 'Continue with your password' })).toBeVisible();
+        expect(attempt.requests).toHaveLength(0);
+
+        // The typed code is still there on return
+        await back(user);
+        expect(await screen.findByText(STEP.emailCode)).toBeVisible();
+        expect(slotValues()).toEqual(CODE.split(''));
+        expect(attempt.requests).toHaveLength(0);
+        expect(prepare.requests).toHaveLength(1);
+        attempt.release();
+      });
+
+      it('ignores a late failure after the user picks the password', async () => {
+        const { prepare, user } = await startSendingCode();
+        await useAnotherMethod(user);
+        await user.click(await screen.findByRole('button', { name: 'Continue with your password' }));
+        expect(await screen.findByText(STEP.password)).toBeVisible();
+
+        prepare.fail('preparation_failed', 'Could not send your code');
+        await settle();
+        expect(screen.getByText(STEP.password)).toBeVisible();
+        expect(screen.queryByText('Could not send your code')).toBeNull();
+      });
+
+      it('ignores a late failure after the user picks another email address', async () => {
+        const { prepare, user } = await startSendingCode([emailFactor, workEmailFactor]);
+        await useAnotherMethod(user);
+        const second = holdRequests('post', PREPARE_FIRST);
+        await user.click(await screen.findByRole('button', { name: 'Email code to alice@work.example' }));
+        await waitFor(() => expect(second.requests).toHaveLength(1));
+
+        prepare.fail('preparation_failed', 'Could not send your code');
+        await settle();
+        expect(screen.getByRole('button', { name: 'Email code to alice@work.example' })).toBeVisible();
+        expect(screen.queryByText('Could not send your code')).toBeNull();
+        expect(prepare.requests).toHaveLength(1);
+        expect(second.requests).toHaveLength(1);
+        second.release();
+      });
+
+      it('ignores a late failure after the challenge is dismissed from the picker and run again', async () => {
+        const action = vi
+          .fn()
+          .mockResolvedValueOnce(reverificationError())
+          .mockResolvedValueOnce(reverificationError());
+        const { prepare, user } = await startSendingCode(undefined, action);
+        await useAnotherMethod(user);
+        await dismiss(user);
+        await waitFor(() => expect(outcome()).toBe('rejected: reverification_cancelled'));
+        await untilClosed();
+
+        const next = holdRequests('post', PREPARE_FIRST);
+        await user.click(screen.getByRole('button', { name: 'Run action' }));
+        expect(await screen.findByText(STEP.emailCode)).toBeVisible();
+        await waitFor(() => expect(next.requests).toHaveLength(1));
+
+        prepare.fail('preparation_failed', 'Could not send your code');
+        await settle();
+        expect(screen.getByText(STEP.emailCode)).toBeVisible();
+        expect(screen.queryByText('Could not send your code')).toBeNull();
+        expect(screen.getByRole('button', { name: /Resend \(\d+\)/ })).toBeDisabled();
+        expect(prepare.requests).toHaveLength(1);
+        next.release();
+      });
+    });
+
     it('resends a code once the cooldown has passed', async () => {
       const { fapi } = await renderReverification(guardedAction(), verificationSeed({ firstFactors: [emailFactor] }));
       vi.useFakeTimers({ toFake: ['Date', 'setInterval', 'clearInterval'] });
diff --git a/packages/mosaic/src/features/reverification/reverification.controller.ts b/packages/mosaic/src/features/reverification/reverification.controller.ts
index 46665d6216a..d50f5d013a6 100644
--- a/packages/mosaic/src/features/reverification/reverification.controller.ts
+++ b/packages/mosaic/src/features/reverification/reverification.controller.ts
@@ -35,7 +35,7 @@ export type ReverificationController = ReverificationControllerState & {
   visible: boolean;
 };
 
-type OverlayFrom = 'factor' | 'method-picker';
+type Overlay = Extract<ReverificationStep, 'method-picker' | 'help'>;
 
 export type ReverificationDeps = Pick<ReverificationActiveModel, 'start' | 'prepare' | 'attempt' | 'finish'>;
 
@@ -48,7 +48,7 @@ interface ReverificationContext {
   resendAvailableAt: number | undefined;
   submitRequested: boolean;
   frozenActiveMethodId: string | undefined;
-  overlayFrom: OverlayFrom;
+  overlay: readonly Overlay[];
   supportEmail: string;
   deps: ReverificationDeps;
 }
@@ -144,28 +144,51 @@ const afterResult = [
   { target: 'verifying' as const, actions: applyResult },
 ];
 
+function topOverlay(ctx: ReverificationContext): Overlay | undefined {
+  return ctx.overlay[ctx.overlay.length - 1];
+}
+
 const factorEvents = {
   TYPE: {
     actions: assign((_, event) => ({ inputValue: event.value, errors: [] })),
   },
   SHOW_METHODS: {
-    target: 'methodPicker',
-    guard: ctx => ctx.methods.filter(method => method.id !== ctx.activeMethod?.id).length > 0,
+    guard: ctx =>
+      ctx.overlay.length === 0 && ctx.methods.filter(method => method.id !== ctx.activeMethod?.id).length > 0,
     actions: assign(ctx => ({
+      overlay: ['method-picker' as const],
       direction: 1 as const,
-      overlayFrom: 'factor' as const,
       submitRequested: false,
       frozenActiveMethodId: ctx.activeMethod?.id,
     })),
   },
   SHOW_HELP: {
-    target: 'help',
-    actions: assign(() => ({
+    guard: ctx => topOverlay(ctx) !== 'help',
+    actions: assign(ctx => ({
+      overlay: [...ctx.overlay, 'help' as const],
       direction: 1 as const,
-      overlayFrom: 'factor' as const,
       submitRequested: false,
     })),
   },
+  BACK: {
+    guard: ctx => ctx.overlay.length > 0,
+    actions: assign(ctx => ({ overlay: ctx.overlay.slice(0, -1), direction: -1 as const })),
+  },
+  SELECT_METHOD: [
+    {
+      target: 'methodPickerPreparing',
+      guard: (ctx, event) => {
+        const method = ctx.methods.find(candidate => candidate.id === event.id);
+        return topOverlay(ctx) === 'method-picker' && Boolean(method && needsPrepare(method));
+      },
+      actions: assign((ctx, event) => selectMethod(ctx, event.id)),
+    },
+    {
+      target: 'verifying',
+      guard: ctx => topOverlay(ctx) === 'method-picker',
+      actions: assign((ctx, event) => ({ ...selectMethod(ctx, event.id), overlay: [] })),
+    },
+  ],
   RESET: 'inactive',
 } satisfies NonNullable<StateConfig<ReverificationContext, ReverificationEvent>['on']>;
 
@@ -181,7 +204,7 @@ export const reverificationMachine = createMachine({
     resendAvailableAt: undefined,
     submitRequested: false,
     frozenActiveMethodId: undefined,
-    overlayFrom: 'factor',
+    overlay: [],
     supportEmail: '',
     deps: unseatedDeps,
   },
@@ -191,6 +214,7 @@ export const reverificationMachine = createMachine({
         inputValue: '',
         errors: [],
         submitRequested: false,
+        overlay: [],
         ...unlockResend(),
       })),
       on: { START: 'starting' },
@@ -214,6 +238,7 @@ export const reverificationMachine = createMachine({
       on: {
         ...factorEvents,
         SUBMIT: {
+          guard: ctx => ctx.overlay.length === 0,
           actions: assign(() => ({ submitRequested: true })),
         },
       },
@@ -247,10 +272,10 @@ export const reverificationMachine = createMachine({
       entry: assign(() => lockResend()),
       on: { RESET: 'inactive' },
       invoke: fromPromise(prepareActive, {
-        onDone: 'verifying',
+        onDone: { target: 'verifying', actions: assign(() => ({ overlay: [] })) },
         onError: {
           target: 'verifying',
-          actions: assign((_, event) => ({ errors: toLocalizableErrors(event.error), ...unlockResend() })),
+          actions: assign((_, event) => ({ errors: toLocalizableErrors(event.error), overlay: [], ...unlockResend() })),
         },
       }),
     },
@@ -259,10 +284,11 @@ export const reverificationMachine = createMachine({
       always: [{ guard: ctx => ctx.activeMethod === null, target: 'unavailable' }],
       on: {
         ...factorEvents,
-        SUBMIT: 'submitting',
+        SUBMIT: { target: 'submitting', guard: ctx => ctx.overlay.length === 0 },
         RESEND: {
           target: 'preparing',
           guard: ctx =>
+            ctx.overlay.length === 0 &&
             Boolean(ctx.activeMethod && needsPrepare(ctx.activeMethod)) &&
             (ctx.resendAvailableAt === undefined || Date.now() >= ctx.resendAvailableAt),
           actions: assign(() => ({
@@ -293,42 +319,6 @@ export const reverificationMachine = createMachine({
       }),
     },
 
-    methodPicker: {
-      on: {
-        SELECT_METHOD: [
-          {
-            target: 'methodPickerPreparing',
-            guard: (ctx, event) => {
-              const method = ctx.methods.find(candidate => candidate.id === event.id);
-              return Boolean(method && needsPrepare(method));
-            },
-            actions: assign((ctx, event) => selectMethod(ctx, event.id)),
-          },
-          { target: 'verifying', actions: assign((ctx, event) => selectMethod(ctx, event.id)) },
-        ],
-        SHOW_HELP: {
-          target: 'help',
-          actions: assign(() => ({ direction: 1 as const, overlayFrom: 'method-picker' as const })),
-        },
-        BACK: { target: 'verifying', actions: assign(() => ({ direction: -1 as const })) },
-        RESET: 'inactive',
-      },
-    },
-
-    help: {
-      on: {
-        BACK: [
-          {
-            target: 'methodPicker',
-            guard: ctx => ctx.overlayFrom === 'method-picker',
-            actions: assign(() => ({ direction: -1 as const })),
-          },
-          { target: 'verifying', actions: assign(() => ({ direction: -1 as const })) },
-        ],
-        RESET: 'inactive',
-      },
-    },
-
     unavailable: {
       on: { RESET: 'inactive' },
     },
@@ -377,12 +367,13 @@ function factorStep(method: ReverificationMethod): ReverificationStep {
   return 'otp';
 }
 
-function viewStep(value: string, method: ReverificationMethod | null): ReverificationStep | undefined {
-  if (value === 'methodPicker' || value === 'methodPickerPreparing') {
-    return 'method-picker';
-  }
-  if (value === 'help') {
-    return 'help';
+function viewStep(
+  value: string,
+  overlay: Overlay | undefined,
+  method: ReverificationMethod | null,
+): ReverificationStep | undefined {
+  if (overlay) {
+    return overlay;
   }
   if (
     value === 'verifying' ||
@@ -493,7 +484,7 @@ function useReverificationState(model: ReverificationModel): ReverificationContr
       return { status: 'error', reason: 'generic', onCancel };
     }
 
-    const step = viewStep(state, activeMethod);
+    const step = viewStep(state, topOverlay(context), activeMethod);
 
     if (!step) {
       return { status: 'loading', onCancel };
diff --git a/packages/mosaic/vitest.setup.browser.mts b/packages/mosaic/vitest.setup.browser.mts
index 9688e433d04..ae98521db28 100644
--- a/packages/mosaic/vitest.setup.browser.mts
+++ b/packages/mosaic/vitest.setup.browser.mts
@@ -64,15 +64,21 @@ beforeEach(() => {
   window.focus();
 });
 
+function clearCookies() {
+  for (const cookie of document.cookie.split('; ').filter(Boolean)) {
+    document.cookie = `${cookie.split('=')[0]}=; max-age=0; path=/`;
+  }
+}
+
+window.addEventListener('pagehide', clearCookies);
+
 afterEach(() => {
   cleanup();
   __resetClerkQueryClientForTest();
   for (const channel of [...openChannels]) {
     channel.close();
   }
-  for (const cookie of document.cookie.split('; ').filter(Boolean)) {
-    document.cookie = `${cookie.split('=')[0]}=; max-age=0; path=/`;
-  }
+  clearCookies();
   localStorage.clear();
   sessionStorage.clear();
   worker.resetHandlers();