[$125] Wallet - Country search scrolls to incorrect line for some letters

[IuliiaHerets]

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Version Number: 9.1.10-0
Reproducible in staging?: Yes
Reproducible in production?: Yes
If this was caught on HybridApp, is this reproducible on New Expensify Standalone?: Yes, reproducible on both
If this was caught during regression testing, add the test name, ID and link from TestRail: https://expensify.testrail.io/index.php?/tests/view/5702032
Email or phone of affected tester (no customers): applausetester+030725dr053@applause.expensifail.com
Issue reported by: Applause Internal Team
Device used: MacOS 14.7.4 / Safari, Chrome, Desktop. iPhone 15 Pro / 18.3.1. Google Pixel 5 / Android 14
App Component: User Settings

Action Performed:

1. Login to NewDot with a new Expensifail account
2. Go to Settings > Wallet
3. Click Add bank account
4. Verify your country is selected by default (eg. United States)
5. In the search bar, enter the first letter of another country. For example - N, A, D, E etc.
6. Select another country (eq. Cambodia) and try searching by letters again.

Expected Result:

Country search scrolls to the correct country starting with these letters.

Actual Result:

For some first letters the country search scrolls to countries that start with a different letter. Incorrect letters will vary depending on the country already selected by default.

Workaround:

Unknown

Platforms:

• Android: Standalone
• Android: HybridApp
• Android: mWeb Chrome
• iOS: Standalone
• iOS: HybridApp
• iOS: mWeb Safari
• MacOS: Chrome / Safari
• MacOS: Desktop

Screenshots/Videos

Bug6763951_1741350688270.iOS-Wallet-Search-Incorrect-Scroll.mp4

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• FitseTLT | Contributor | 106479043

Issue Owner

Current Issue Owner: @ahmedGaber93

[melvin-bot]

Triggered auto assignment to @mallenexpensify (Bug), see https://stackoverflow.com/c/expensify/questions/14418 for more details. Please add this bug to a GH project, as outlined in the SO.

[FitseTLT]

🚨 Edited by proposal-police: This proposal was edited at 2025-03-07 16:15:55 UTC.

Proposal

Please re-state the problem that we are trying to solve in this issue.

Wallet - Country search scrolls to incorrect line for some letters

What is the root cause of that problem?

When the search key contains letters from the currently selected item, the selected item will still be in the list but its index might change (because the relative index will change as the number of items above it change) then setFocusedIndex will be called with the current new index of the selected item

App/src/components/SelectionList/BaseSelectionList.tsx

Lines 363 to 374 in 1247366

	const selectedItemIndex = useMemo(
	() => (initiallyFocusedOptionKey ? flattenedSections.allOptions.findIndex((option) => option.isSelected) : -1),
	[flattenedSections.allOptions, initiallyFocusedOptionKey],
	);
	useEffect(() => {
	if (selectedItemIndex === -1 || selectedItemIndex === focusedIndex) {
	return;
	}
	setFocusedIndex(selectedItemIndex);
	// eslint-disable-next-line react-compiler/react-compiler, react-hooks/exhaustive-deps
	}, [selectedItemIndex]);

What changes do you think we should make in order to solve the problem?

This feature is implemented in #54457 but caused this issue. So we should disable it if there is a search string like:

App/src/components/SelectionList/BaseSelectionList.tsx

Lines 369 to 370 in 1247366

	if (selectedItemIndex === -1 || selectedItemIndex === focusedIndex) {
	return;

 if (selectedItemIndex === -1 || selectedItemIndex === focusedIndex || textInputValue) {
            return;

What specific scenarios should we cover in automated tests to prevent reintroducing this issue in the future?

The test created for the original pr suffices.

What alternative solutions did you explore? (Optional)

[nyomanjyotisa]

Proposal

Please re-state the problem that we are trying to solve in this issue.

Wallet - Country search scrolls to incorrect line for some letters

What is the root cause of that problem?

We update the focusedIndex once the flattenedSections.allOptions is updated. This is necessary to update the focusedIndex when there is a changes on Backend especially for Priority mode selection in this issue #54457

But, we also update the focusedIndex when the new data of flattenedSections.allOptions coming from search result

What changes do you think we should make in order to solve the problem?

Return early if the new data of flattenedSections.allOptions coming from search result

App/src/components/SelectionList/BaseSelectionList.tsx

Lines 368 to 374 in 2316207

	useEffect(() => {
	if (selectedItemIndex === -1 || selectedItemIndex === focusedIndex) {
	return;
	}
	setFocusedIndex(selectedItemIndex);
	// eslint-disable-next-line react-compiler/react-compiler, react-hooks/exhaustive-deps
	}, [selectedItemIndex]);

    useEffect(() => {
        if (selectedItemIndex === -1 || selectedItemIndex === focusedIndex || prevTextInputValue !== textInputValue) {
            return;
        }
        setFocusedIndex(selectedItemIndex);
        // eslint-disable-next-line react-compiler/react-compiler, react-hooks/exhaustive-deps
    }, [selectedItemIndex]);

Additionally we can set focus to the default value if the textInputValue empty if needed

What specific scenarios should we cover in automated tests to prevent reintroducing this issue in the future?

N/A

What alternative solutions did you explore? (Optional)

Or we can do like this instead of using existing prevTextInputValue value

const prevTextInputValueRef = useRef(textInputValue);

useEffect(() => {
    if (prevTextInputValueRef.current !== textInputValue) {
        prevTextInputValueRef.current = textInputValue;
        return;
    }

    if (selectedItemIndex === -1 || selectedItemIndex === focusedIndex) {
        return;
    }

    setFocusedIndex(selectedItemIndex);
}, [selectedItemIndex]);

[melvin-bot]

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[melvin-bot]

Job added to Upwork: https://www.upwork.com/jobs/~021898763466530762704