It looks like this pull request may not have tests. Please make sure to add tests before merging. If you need an exemption to this rule, contact Hixie.

Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing.

These seem to match what's in the files (for ex. https://github.com/flutter/flutter/blob/master/packages/flutter_localizations/lib/src/l10n/material_zh_TW.arb) but they haven't changed recently, I don't understand what caused this 🤔

@DanTup, you're not alone: This fixes the build, but we still have no idea why... We're trying to figure out where the non-determinism is sneaking in.

Is it too late to take back a LGTM?

LOL, yeah sorry, it's too late. The up side is that Shi-Hao has follow-on PR that maybe removes the non-determinism.