fix: iOS - Copilot - App returns to login page after removing copilot

[TaduJR]

Explanation of Change

When a delegate removes themselves as copilot, the server returns jsonCode: 408 which the HandleDeletedAccount middleware handles by calling signOutAndRedirectToSignIn. The existing code path calls redirectToSignIn() (which clears SESSION) then Onyx.multiSet() (which restores it), creating a ~730ms window where the login page flashes.

This PR adds a new branch in signOutAndRedirectToSignIn that uses Onyx.clear(KEYS_TO_PRESERVE_SUPPORTAL) preserving SESSION during the clear then restores the stashed session via Onyx.multiSet, matching the existing supportal flow pattern. This eliminates the flash.

It also adds STASHED_SESSION and STASHED_CREDENTIALS to KEYS_TO_PRESERVE in App.ts so that Clear Cache doesn't destroy delegate recovery data, which previously caused permanent logout.

Fixed Issues

$ #84186
PROPOSAL: #84186 (comment)

Tests

Based on the issue, there are two test cases:

Tests

Case 1: Removing copilot without Clear Cache

1. Precondition: User has copilot access to another account
2. Launch Expensify app
3. Go to Account
4. Open account switcher
5. Select another account (switch to delegator's account)
6. Go to Account > Security
7. Tap on the main account (yourself in the copilot list)
8. Tap Remove copilot > Remove copilot
9. Verify the user returns to their main account without briefly seeing the login page

Case 2: Removing copilot after Clear Cache

1. Precondition: User has copilot access to another account
2. Launch Expensify app
3. Go to Account > Troubleshoot > Clear Cache and Restart
4. Wait for the app to reload
5. Go to Account
6. Open account switcher
7. Select another account (switch to delegator's account)
8. Go to Account > Security
9. Tap on the main account (yourself in the copilot list)
10. Tap Remove copilot > Remove copilot
11. Verify the user returns to their main account without being stuck on the login page or infinite loading

• Verify that no errors appear in the JS console

Offline tests

Same as tests

QA Steps

// TODO: These must be filled out, or the issue title must include "[No QA]."
Same as tests

• Verify that no errors appear in the JS console

PR Author Checklist

• I linked the correct issue in the ### Fixed Issues section above
• I wrote clear testing steps that cover the changes made in this PR
  • I added steps for local testing in the Tests section
  • I added steps for the expected offline behavior in the Offline steps section
  • I added steps for Staging and/or Production testing in the QA steps section
  • I added steps to cover failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
  • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
  • I tested this PR with a High Traffic account against the staging or production API to ensure there are no regressions (e.g. long loading states that impact usability).
• I included screenshots or videos for tests on all platforms
• I ran the tests on all platforms & verified they passed on:
  • Android: Native
  • Android: mWeb Chrome
  • iOS: Native
  • iOS: mWeb Safari
  • MacOS: Chrome / Safari
  • MacOS: Desktop
• I verified there are no console errors (if there's a console error not related to the PR, report it or open an issue for it to be fixed)
• I verified there are no new alerts related to the canBeMissing param for useOnyx
• I followed proper code patterns (see Reviewing the code)
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    • If any non-english text was added/modified, I used JaimeGPT to get English > Spanish translation. I then posted it in #expensify-open-source and it was approved by an internal Expensify engineer. Link to Slack message:
  • I verified all numbers, amounts, dates and phone numbers shown in the product are using the localization methods
  • I verified any copy / text that was added to the app is grammatically correct in English. It adheres to proper capitalization guidelines (note: only the first word of header/labels should be capitalized), and is either coming verbatim from figma or has been approved by marketing (in order to get marketing approval, ask the Bug Zero team member to add the Waiting for copy label to the issue)
  • I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
  • I verified the JSDocs style guidelines (in STYLE.md) were followed
• If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers
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• If a new page is added, I verified it's using the ScrollView component to make it scrollable when more elements are added to the page.
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• If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.

Screenshots/Videos

Android: Native

Android-Native.mp4

Android: mWeb Chrome

Android-mWeb.mp4

iOS: Native

iOS-Native-1.mp4

iOS-Native-2.mp4

iOS: mWeb Safari

iOS-Safari.mp4

MacOS: Chrome / Safari

Mac-Chrome-1.mp4

Mac-Chrome-2.mp4

[melvin-bot]

@suneox Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

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Codecov Report

❌ Looks like you've decreased code coverage for some files. Please write tests to increase, or at least maintain, the existing level of code coverage. See our documentation here for how to interpret this table.

Files with missing lines	Coverage Δ
src/libs/actions/App.ts	47.12% <ø> (ø)
src/libs/actions/Session/index.ts	42.79% <9.09%> (-0.85%)	⬇️
... and 17 files with indirect coverage changes

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[TaduJR]

@suneox

Should we be concerned with the brief flash of the member upon removal?

[trjExpensify]

Looks good, much more graceful. 👍

[suneox]

Reviewer Checklist

• I have verified the author checklist is complete (all boxes are checked off).
• I verified the correct issue is linked in the ### Fixed Issues section above
• I verified testing steps are clear and they cover the changes made in this PR
  • I verified the steps for local testing are in the Tests section
  • I verified the steps for Staging and/or Production testing are in the QA steps section
  • I verified the steps cover any possible failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
  • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
• I checked that screenshots or videos are included for tests on all platforms
• I included screenshots or videos for tests on all platforms
• I verified that the composer does not automatically focus or open the keyboard on mobile unless explicitly intended. This includes checking that returning the app from the background does not unexpectedly open the keyboard.
• I verified tests pass on all platforms & I tested again on:
  • Android: HybridApp
  • Android: mWeb Chrome
  • iOS: HybridApp
  • iOS: mWeb Safari
  • MacOS: Chrome / Safari
• If there are any errors in the console that are unrelated to this PR, I either fixed them (preferred) or linked to where I reported them in Slack
• I verified proper code patterns were followed (see Reviewing the code)
  • I verified that any callback methods that were added or modified are named for what the method does and never what callback they handle (i.e. toggleReport and not onIconClick).
  • I verified that comments were added to code that is not self explanatory
  • I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
  • I verified any copy / text shown in the product is localized by adding it to src/languages/* files and using the translation method
  • I verified all numbers, amounts, dates and phone numbers shown in the product are using the localization methods
  • I verified any copy / text that was added to the app is grammatically correct in English. It adheres to proper capitalization guidelines (note: only the first word of header/labels should be capitalized), and is either coming verbatim from figma or has been approved by marketing (in order to get marketing approval, ask the Bug Zero team member to add the Waiting for copy label to the issue)
  • I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
  • I verified the JSDocs style guidelines (in STYLE.md) were followed
• If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers
• I verified that this PR follows the guidelines as stated in the Review Guidelines
• I verified other components that can be impacted by these changes have been tested, and I retested again (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar have been tested & I retested again)
• I verified all code is DRY (the PR doesn't include any logic written more than once, with the exception of tests)
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• If any new file was added I verified that:
  • The file has a description of what it does and/or why is needed at the top of the file if the code is not self explanatory
• If a new CSS style is added I verified that:
  • A similar style doesn't already exist
  • The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(theme.componentBG)
• If the PR modifies code that runs when editing or sending messages, I tested and verified there is no unexpected behavior for all supported markdown - URLs, single line code, code blocks, quotes, headings, bold, strikethrough, and italic.
• If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
• If the PR modifies a component related to any of the existing Storybook stories, I tested and verified all stories for that component are still working as expected.
• If the PR modifies a component or page that can be accessed by a direct deeplink, I verified that the code functions as expected when the deeplink is used - from a logged in and logged out account.
• If the PR modifies the UI (e.g. new buttons, new UI components, changing the padding/spacing/sizing, moving components, etc) or modifies the form input styles:
  • I verified that all the inputs inside a form are aligned with each other.
  • I added Design label and/or tagged @Expensify/design so the design team can review the changes.
• If a new page is added, I verified it's using the ScrollView component to make it scrollable when more elements are added to the page.
• For any bug fix or new feature in this PR, I verified that sufficient unit tests are included to prevent regressions in this flow.
• If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.
• I have checked off every checkbox in the PR reviewer checklist, including those that don't apply to this PR.

Screenshots/Videos

Android: HybridApp

CleanShot.2026-04-06.at.21.47.23.5.mp4

Android: mWeb Chrome

CleanShot.2026-04-06.at.21.44.29.4.mp4

CleanShot.2026-04-06.at.21.48.56.6.mp4

Fixed on 11 Apr

CleanShot.2026-04-13.at.20.28.14.1.mp4

iOS: HybridApp

CleanShot.2026-04-06.at.21.42.50.3.mp4

iOS: mWeb Safari

CleanShot.2026-04-06.at.21.37.00.2.mp4

MacOS: Chrome / Safari

CleanShot.2026-04-06.at.21.33.37.1.mp4

[suneox]

@suneox

Should we be concerned with the brief flash of the member upon removal?

@TaduJR I just double-checked after merging with the latest main. The current behavior still looks good on all platforms, except on Android mWeb, where it still briefly flashes to the login screen.

Android: mWeb Chrome

CleanShot.2026-04-06.at.21.44.29.4.mp4

CleanShot.2026-04-06.at.21.48.56.6.mp4

[TaduJR]

@TaduJR I just double-checked after merging with the latest main. The current behavior still looks good on all platforms, except on Android mWeb, where it still briefly flashes to the login screen.

@suneox

Not able to repo on my end after merge main. Am I missing something?

Android-mWeb.mp4

[suneox]

Not able to repo on my end after merge main. Am I missing something?

Confirmed — this issue was fixed on latest PR

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platform	result
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🤖 android 🤖	cancelled 🔪
🍎 iOS 🍎	cancelled 🔪

Bundle Size Analysis (Sentry):

• Android

[MelvinBot]

No help site changes are required for this PR.

The changes are purely internal bug fixes to session state management (preserving STASHED_SESSION/STASHED_CREDENTIALS during Clear Cache, eliminating login page flash on stashed session restore). No user-facing workflows, UI labels, navigation steps, or feature behavior changed.

The existing help site articles already accurately describe the copilot flows:

• new-expensify/settings/Copilot-Access.md
• expensify-classic/copilots-and-delegates/Assign-or-remove-a-Copilot.md

[OSBotify]

🚀 Deployed to production by https://github.com/AndrewGable in version: 9.3.59-4 🚀

platform	result
🕸 web 🕸	success ✅
🤖 android 🤖	success ✅
🍎 iOS 🍎	success ✅