Breaks XML preview in browser

does not work anymore , don't show info about media in any page.

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Only works in Nightly despite this not being mentioned anywhere.

if enabled, sometimes you get errors { code: 25, name: "DataCloneError", message: "The object could not be cloned." } in parts of streaming conversation (answer, video and audio conversation) FF:74.0 (getUserMedia constraints)

good

......................

nice

Routinely shows "No media" on pages with media.