facebook / react · Issue No. 37652

Bug: view-transition-class is replaced by view-transition-name after a Suspense boundary reveals

Openby h-zaharopened Sep 17, 2026updated Sep 17, 20260 comments

Status: Unconfirmed

Description

React version: 19.3.0

Steps To Reproduce

SSR a <Suspense> boundary wrapped in <ViewTransition> with renderToPipeableStream.
Put an inline view-transition-name and view-transition-class on the content inside it.
Resolve the boundary, so React runs a view transition for the reveal.
Read the element's style after the transition.

The current behavior

view-transition-class ends up holding the view-transition-name value.

Server sends:

style="view-transition-name:authored-name;view-transition-class:authored-class"

After the reveal:

style="view-transition-name: authored-name; view-transition-class: authored-name;"

::view-transition-group(*.authored-class) stops matching.

If the class was the only inline style, the attribute is removed:

server sends   style="view-transition-class:authored-class"
after reveal   null

The expected behavior

Both come back as authored, and the style attribute survives.

The Fix

I've already opened a pull request #37651 that will close this issue.

Relay Analysis

View on GitHub

Relay reads this issue against the repository's contribution signals: the files it is likely to touch, how the maintainers triage work this size, and what the first contribution would exercise.

The full analysis for this issue is still being assembled. Until then, the description above and the thread on GitHub are the most reliable context.