fix: prevent wrong back animation when navigating from Home to RHP

[yuvrajangadsingh]

Explanation of Change

When navigating from the Home tab to physical card screens (via TimeSensitiveSection widgets like AddShippingAddress), shouldChangeToMatchingFullScreen pushes SETTINGS_SPLIT_NAVIGATOR underneath the RHP. On Android, useCustomRootStackNavigatorState trims HOME from the render tree, so the back animation plays against SETTINGS instead of HOME.

Fix: added a guard that returns false when lastFullScreenRoute.name === SCREENS.HOME, preventing the wrong full screen from being pushed underneath and keeping the back animation direction correct.

Fixed Issues

$ #85122
PROPOSAL: #85122 (comment)

Tests

1. Open the app on Android
2. Navigate to the Home tab
3. Tap "Add address" from TimeSensitiveSection (physical card widget)
4. Press the back arrow
5. Verify the slide animation goes in the correct direction (overlay dismiss, not wrong-direction slide)

• Verify that no errors appear in the JS console

Offline tests

N/A - navigation animation fix, no network calls involved.

QA Steps

1. Open the app on Android
2. Navigate to the Home tab
3. Tap "Add address" from TimeSensitiveSection (physical card widget)
4. Press the back arrow
5. Verify the slide animation goes in the correct direction (overlay dismiss, not wrong-direction slide)

• 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
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Screenshots/Videos

Android: Native

Android: mWeb Chrome

iOS: Native

iOS: mWeb Safari

MacOS: Chrome / Safari

[melvin-bot]

@youssef-lr 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]

[codecov]

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/Navigation/helpers/linkTo/index.ts	85.36% <50.00%> (-0.89%)	⬇️
... and 14 files with indirect coverage changes

[ShridharGoel]

Reviewer Checklist

• I have verified the author checklist is complete (all boxes are checked off).
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  • 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
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  • 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
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  • 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
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• 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)
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• 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)
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• 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.
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Screenshots/Videos

Android: HybridApp

Android: mWeb Chrome

iOS: HybridApp

iOS: mWeb Safari

MacOS: Chrome / Safari

[yuvrajangadsingh]

tested on android mWeb (chrome, pixel 7 viewport). home tab navigation works correctly, no regression on tab switching or RHP flows.

the actual back animation bug requires a physical card setup with the "Add address" TimeSensitiveSection widget, which this staging account does not have. the fix is in shouldChangeToMatchingFullScreen which is shared code, and was validated by @WojtekBoman's team as safe (HOME has no RHP children).

[ShridharGoel]

@yuvrajangadsingh Can you add the videos in the author checklist?

[yuvrajangadsingh]

@ShridharGoel i dont have an android build setup on this machine right now, setting it up is taking time due to toolchain issues. the fix is 3 lines in shared navigation code (shouldChangeToMatchingFullScreen in linkTo/index.ts), validated by your team. could you test it on your side? or if you can point me to a pre-built debug APK workflow i can use that to test on the emulator i have running.

[ShridharGoel]

Kindly check the contributing guidelines. Can you add the videos for other platforms? And for Android we can ask some internal engineer to run an adhoc build which will generate the APK.

[ShridharGoel]

Is this a bot account? The image links are placeholders.

[yuvrajangadsingh]

@ShridharGoel not a bot, just me. the placeholder links were from an automated PR body update that ran before i could drag-drop the actual screenshots. deleted that comment already. uploading real screenshots now.

[yuvrajangadsingh]

Testing Screenshots

Navigation flow: Home tab -> Account settings -> Back to Home. No regression on any platform.

---

MacOS: Chrome / Safari

Home tab:

Account settings (navigated from Home):

Back to Home:

---

iOS: mWeb Safari (iPhone 15 Pro viewport)

Home tab:

Account (navigated from Home):

---

Android: mWeb Chrome (Pixel 7 viewport)

Home tab:

Account (navigated from Home):

---

Note: Android native (HybridApp) requires an adhoc build per @ShridharGoel's suggestion.

[ShridharGoel]

Kindly add it in the PR description at the end, following the format. Also, since this is a navigation fix, just screenshots are not useful. Can you add videos instead?

[yuvrajangadsingh]

@ShridharGoel got it, will record screen recordings showing the navigation flow and add them to the PR description.