Timezone - App detects incorrect timezone when automatic timezone is enabled

[lanitochka17]

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Version Number: 1.4.24-0
Reproducible in staging?: Y
Reproducible in production?: N
If this was caught during regression testing, add the test name, ID and link from TestRail:
Email or phone of affected tester (no customers):
Logs: https://stackoverflow.com/c/expensify/questions/4856
Expensify/Expensify Issue URL:
Issue reported by: Applause - Internal Team
Slack conversation:

Action Performed:

Precondition:

• Device timezone is set to automatic
• App timezone is set to automatic
• User lives in Malaysia with GMT+8 (Asia/Kuala_Lumpur) timezone

1. Go to Settings > Profile > Timezone

Expected Result:

The correct timezone is detected

Actual Result:

The incorrect timezone is detected
User lives in Malaysia with GMT+8 (Asia/Kuala_Lumpur) timezone, while app shows Asia/Singapore as the automatic timezone, where Singapore is a neigbor of Malaysia

Workaround:

Unknown

Platforms:

Which of our officially supported platforms is this issue occurring on?

• Android: Native
• Android: mWeb Chrome
• iOS: Native
• iOS: mWeb Safari
• MacOS: Chrome / Safari
• MacOS: Desktop

Screenshots/Videos

Add any screenshot/video evidence

Bug6337781_1704899025363.Screen_Recording_20240110_224011_New_Expensify.mp4

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[github-actions]

👋 Friendly reminder that deploy blockers are time-sensitive ⏱ issues! Check out the open `StagingDeployCash` deploy checklist to see the list of PRs included in this release, then work quickly to do one of the following:

1. Identify the pull request that introduced this issue and revert it.
2. Find someone who can quickly fix the issue.
3. Fix the issue yourself.

[melvin-bot]

Triggered auto assignment to @marcochavezf (Engineering), see https://stackoverflow.com/c/expensify/questions/4319 for more details.

[shubham1206agra]

Offending PR #31074

[shubham1206agra]

Not a big deal tbh. Both have same timezone.

[situchan]

This is not new bug - #31074 (comment)

[situchan]

@tienifr please check this

[tienifr]

Sure let me take a look.

[tienifr]

Asia/Kuala_Lumpur is an obsolete timezone and linked to Asia/Singapore instead (reference). But they all point to the same timezone GMT+8 so not a big deal.

[situchan]

ok I will defer to @marcochavezf whether to treat this as bug or not. At least not deploy blocker

[marcochavezf]

Thanks for the investigation @tienifr, I suppose the change is because of the new polyfill, correct? Also, given the reason here and the priorities I'm inclined to close it, we can re-open it if there other impacts of the introduced polyfill.