Bug 311602 – [Quirk] invideo.io: add a window.chrome object to bypass the code sniffing.

• Component: New Bugs
• Status: RESOLVED FIXED

[Karl Dubost]

There is a double block on Safari:

1. !!window.chrome (line 1798) — a property-based sniff that excludes all non-Chromium browsers
2. ["safari"].includes(browserName) (line 1921) — an explicit UA-based Safari exclusion via dhe(), used to prevent Safari from passing even if it supports the required Web APIs

Safari actually supports both WebGL2 and SharedArrayBuffer (with proper COOP/COEP headers). The site's playback engine likely depends on Chromium-specific behavior or simply never tested on Safari/WebKit. The block is browser-sniffing, not feature-detection — Safari is excluded by name and by the absence of window.chrome, not because it lacks the required capabilities.

There is an outreach radar too. rdar://172352516

The User-Agent override has been done on the side of the Safari code.

This part will address the window.chrome object faking in the WebKit Code.

Steps to Reproduce:
1. Go to https://invideo.io
2. Login (sign up dance if you didn’t do it.)
3. You are being redirected to a space in https://ai.invideo.io/workspace/long_id_here/v40-copilot
4. Click on Advertising Studio
5. Select Logo
6. Click on New
7. Project Name: Webcompat
8. Click on create-project.
9. Give a prompt.
10. Click on Unlimited.

[Karl Dubost]

rdar://171741842

[Karl Dubost]

Pull request: https://github.com/WebKit/WebKit/pull/62154

[EWS]

Committed 310809@main (81b942bfeab5): <https://commits.webkit.org/310809@main>

Reviewed commits have been landed. Closing PR #62154 and removing active labels.