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remove dom.IntersectionObserver.enabled #1026

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- this was made inactive in v68
- since at least FF79, when active as false, it breaks the web and browser consoles
- it breaks websites
- it breaks extensions: e.g. uBO panel functionality
- it does nothing to mitigate possible fingerprinting (which was why it was initially added as a concern) - i.e the API only provided a standardized method, it does not stop previous/earlier workarounds
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Thorin-Oakenpants 2020-10-02 08:33:27 +00:00 committed by GitHub
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@ -1073,11 +1073,6 @@ user_pref("javascript.options.asmjs", false);
* [NOTE] In FF71+ this no longer affects extensions (1576254)
* [1] https://developer.mozilla.org/docs/WebAssembly ***/
user_pref("javascript.options.wasm", false);
/* 2426: disable Intersection Observer API [FF55+]
* [1] https://developer.mozilla.org/docs/Web/API/Intersection_Observer_API
* [2] https://w3c.github.io/IntersectionObserver/
* [3] https://bugzilla.mozilla.org/1243846 ***/
// user_pref("dom.IntersectionObserver.enabled", false);
/* 2429: enable (limited but sufficient) window.opener protection [FF65+]
* Makes rel=noopener implicit for target=_blank in anchor and area elements when no rel attribute is set ***/
user_pref("dom.targetBlankNoOpener.enabled", true); // [DEFAULT: true FF79+]