Bug 444222 is pref-controlled and default-offin non-nightly, so I don't see a concern with uplifting it. We would probably not enable it on ESR though because it poses a webcompat concern....
Bug 1675097 Comment 29 Edit History
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Bug 444222 is pref-controlled and default-off in non-nightly, so I don't see a concern with uplifting it. We would probably not enable it on ESR though because it poses a webcompat concern....