# RFC-78: Dropping support for React 16 and rendering in a React 18 concurrent root in Jira and Confluence

**URL:** <https://community.developer.atlassian.com/t/rfc-78-dropping-support-for-react-16-and-rendering-in-a-react-18-concurrent-root-in-jira-and-confluence/87026>\
**Category:** Request for Comments (RFC)\
**Tags:** atlassian-design-system, adg, react, connect, connect-app, custom-ui, design-system, rfc, atlaskit, forge-ui-kit, atlassian-connect\
**Created:** [December 9, 2024, 1:20am UTC](https://community.developer.atlassian.com/t/rfc-78-dropping-support-for-react-16-and-rendering-in-a-react-18-concurrent-root-in-jira-and-confluence/87026 "2024-12-09T01:20:31Z")\
**Posts on this page:** 1\
**Showing post:** 23

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**Author:** ![KylorHall](https://avatars.discourse-cdn.com/v4/letter/k/919ad9/32.png) [@KylorHall](https://community.developer.atlassian.com/u/KylorHall)\
**Post date:** [December 19, 2025, 3:28am UTC](https://community.developer.atlassian.com/t/rfc-78-dropping-support-for-react-16-and-rendering-in-a-react-18-concurrent-root-in-jira-and-confluence/87026/23 "2025-12-19T03:28:25Z")

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Apologies for another delayed response, it’s been a bit hard to give another half answer, but I probably have enough to give an end-of-year update:

#### Strict Mode

We have no official plans to support Strict Mode. It might be possible after we’ve done a full React 19 migration, but I do not see us enabling Strict Mode ourselves for the foreseeable future and it’s not on our roadmap.

#### React 19

Probably not a surprise, we’ve started on the journey to React 19 🎉 I expect we’ll share a bit more in 2026 as we have a timeline on dropping React 18 support, but I can say officially we’ve done more than just explorations.

I believe all of the Design System Team packages work in React 19 today (though it’s possible ecosystem support is pending a feature gate). We formally haven’t started dogfooding React 19 anywhere, but we’ve had a few apps get a local working branch and fixed everything we saw blocking that. We’re working on involving the wider platform and frontend monorepo now.

I’m not here to promise a timeline, but ecosystem comms are written as one of the first steps when that roadmap is solidified and fully resourced, but so far React 19 feels much smoother than React 18 — mostly statically deterministic and a matter of removing deprecated APIs and unmaintained third-party dependencies rather than changing the way the entire root renders.

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_[View the full topic](https://community.developer.atlassian.com/t/rfc-78-dropping-support-for-react-16-and-rendering-in-a-react-18-concurrent-root-in-jira-and-confluence/87026)._