$redirect modifier does not fake XMLHttpRequest.prototype.responseURL

[piquark6046]

AdGuard Extension version

4.1.53

Browser version

Mozilla Firefox Developer Edition 111.0b8; Brave 1.48.171

OS version

Ubuntu 22.10

What filters do you have enabled?

No filters

What Stealth Mode options do you have enabled?

No response

Issue Details

XMLHttpRequest.prototype.responseURL returns (Browser Extension)://(UUID)/web-accessible-resources/redirects/googlesyndication-adsbygoogle.js?secret=... if ||pagead2.googlesyndication.com/pagead/js/adsbygoogle.js$redirect=googlesyndication-adsbygoogle rule is applied.

A website can profile a visitor with the browser extension's UUID.
uBlock Origin is not affected by this issue.

Expected Behavior

XMLHttpRequest.prototype.responseURL returns https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js.

Screenshots

Brave

Screencast.from.2023-03-05.09-37-15.webm

Mozilla Firefox Developer Edition

Screencast.from.2023-03-05.09-36-42.webm

Additional Information

• $redirect modifier does not fake Response.prototype.url #2278
• https://piquark6046.github.io/testpage/XMLResponseHeader/