useIntl() return object not being updated after changing locale to previously used value

[chrisswordfish]

Updated the other day to version 3.1.3 and noticed this immediately. Switching from initial state to a different value (locale: 'en' -> locale: 'es') works fine. All my useIntl hooks are being updated. Switching BACK from (locale: 'es' -> locale: 'en') does not cause a re-render in any of those components.

I re-installed version 3.1.2 and verified the issue no longer occurs. Suspect it is an issue with the caching bug fixes made in 3.1.3

Expected behavior

Changing locale property on IntlProvider triggers all useIntl() hook consumers to update.

Current behavior

Switching the first time works perfectly. Any subsequent switches back to a previously used locale does nothing.

Step to reproduce for BUG REPORT

Create an IntlProvider and pass it a locale value ( from a simple state object ). Change the state (using setState) and verify the locale is changed in a child component which uses useIntl(). Change the state back to the initial state and verify the child components do not re-render with the updated intl object.

Your Environment

Executable	Version
npm ls react-intl	3.1.5
npm ls react	16.9
npm --version	6.4.1
node --version	10.15.3

| OS | Version |
| Windows 10 | ------- |

| Browser | Version |
| Chrome | 75.0.3770.142 |

[longlho]

Can u make a quick codesandbox to demo this? nvm I added a test. Thanks a lot for reporting!

[chrisswordfish]

No worries, thanks for being so quick to resolve.