# Notice: Change impacting Debug Build for React Native Vega Applications (react-native-localize)

**URL:** <https://community.amazondeveloper.com/t/notice-change-impacting-debug-build-for-react-native-vega-applications-react-native-localize/28252>\
**Category:** Announcements\
**Created:** [June 3, 2026, 6:57pm UTC](https://community.amazondeveloper.com/t/notice-change-impacting-debug-build-for-react-native-vega-applications-react-native-localize/28252 "2026-06-03T18:57:22Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Michael\_Richardson](https://dhm3gbtzu79o6.cloudfront.net/user_avatar/community.amazondeveloper.com/michael_richardson/32/3609_2.png) [@Michael\_Richardson](https://community.amazondeveloper.com/u/Michael_Richardson)\
**Post date:** [June 3, 2026, 6:57pm UTC](https://community.amazondeveloper.com/t/notice-change-impacting-debug-build-for-react-native-vega-applications-react-native-localize/28252/1 "2026-06-03T18:57:22Z")

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Hello Developers,

We’re reaching out to let you know about a recent change on Fire TV HD devices (and soon, Fire TV Stick 4K Select, build 1901010003020 or newer) that affects the [@amazon-devices/react-native-localize](https://www.npmjs.com/package/@amazon-devices/react-native-localize) library. **If your app does not use this library, no action is needed on your part.**

**Background** : A change recently rolled out to all Vega powered FireTV HD devices and is in the process of rolling out to FireTV Stick 4K Select (build # 1901010003020) that impacts the functionality of `react-native-localize`. This change does not impact Release variant builds. This impacts new builds of debug variant when you depend on `2.0.x` versions of the library.

**Impact** : If you don’t take any action, release build variants will continue to work as is; however, debug build variants will return an exception API calls to `react-native-localize`, which is commonly used on app start to identify localization settings. As an example, the [vega-video-sample](https://github.com/AmazonAppDev/vega-video-sample) release 0.22.1 crashes on app start in Debug variant due to this problem.

**Mitigation** : We recommend app developers using the `react-native-localize` library to update to version `2.1.x` which was made available as part of the 0.23 release (17-Jun). Once you update to the new library, debug builds will resume functioning the same as before.