jeanhbr

Summary

Works almost entirely on the Immersive API surface — model element presentation, website environment lifecycle, and the SPI-to-API transition — split across WebKit, WebCore, and Platform. The recurring theme is presentation state consistency rather than memory safety: stale immersive state after navigation, failure to re-enter after exit, UI stuck in active state, and races during rapid request/exit cycles, plus a fullscreen crash when a second video takes over. That cluster of lifecycle desync bugs is the interesting surface here — nested/interleaved fullscreen and immersive transitions across process and navigation boundaries are a promising area to sweep for related state-confusion bugs.

Components

Security Fix History

• No security fixes recorded

Hardening Commits

• 2025-11-25 REGRESSSION(303504@main): Broke Asan builds
• 2025-11-25 REGRESSSION(303504@main): Broke Asan builds

Recent Commits

• 2026-07-23 model-element-immersive-state-consistency.html test is flaky
• 2026-07-22 Improve the Immersive API documentation
• 2026-07-10 Navigating back to page with previously active web env leaves UI stuck showing active state
• 2026-06-17 Unable to re-enter website environment after short delay
• 2026-06-17 Crash can occur when a video is playing in fullscreen and a second video gets fullscreen'ed in visionOS
• 2026-06-12 Increase memory limit for immersive models
• 2026-06-12 Remove Spatial Backdrop developer preview in favor of the Immersive API
• 2026-06-11 Unable to Tap "Exit Immersive" in the ticket sales experience demo
• 2026-06-10 Theater model unloads between 2 seat selections
• 2026-06-05 Add immersive model examples
• 2026-05-07 Animated models unexpectedly loop back automatically
• 2026-05-05 Use `NotAllowedError` for transient activation error during immersive request
• 2026-04-21 Fix immersive state consistency during rapid request/exit cycles
• 2026-04-14 Move Client Website Environment SPI to API
• 2026-03-27 Navigating away from the page can produce a stale immersive state
• 2026-03-23 The current document immersive element should be updated as soon as it gets presented
• 2026-03-20 Client should be notified to dismiss its immersive presentation in case the website crashes
• 2026-03-20 Remove logic adding scene understanding component to immersive models
• 2026-03-20 Conversion to standardized transform is wrong in immersive presentation
• 2026-02-13 Plumb WebView configuration signal to allow immersive elements
• 2026-02-13 Update Immersive Model feature default enablement
• 2026-02-11 Add Jean Haberer as committer
• 2026-02-11 Check whether the immersive model presentation is allowed inside the UI Process
• 2026-02-10 Immersive API should only work in the top-level frame
• 2026-02-05 Support immersive request cancellation
• 2026-02-03 Ensure Scene Understanding Component is applied on immersive models
• 2026-01-20 Fix Immersive Model lifecycle issues
• 2026-01-10 Subtitles do not appear in external playback
• 2025-12-11 The client app should be able to exit the immersive element
• 2025-12-11 Removing an immersive model from the DOM should exit immersive session
• 2025-12-05 Present the immersive model in the client app
• 2025-12-04 Prepare the model player for the immersive presentation
• 2025-12-02 Prepare the <model> for an immersive presentation
• 2025-11-27 Ask the client before pursuing an immersive request
• 2025-11-25 REGRESSSION(303504@main): Broke Asan builds
• 2025-11-25 REGRESSSION(303504@main): Broke Asan builds
• 2025-11-24 Add an API skeleton to request a <model> element immersive