getDisplayMedia() from a document Picture-in-Picture window

documentPictureInPicture.requestWindow() hands back a second same-origin Window, with its own navigator.mediaDevices. This page calls getDisplayMedia() from three places: here, from the PiP window's own realm, and from this window's realm but triggered by a click inside the PiP window. Compare which window the share picker is attributed to, and whether a click in the PiP window counts as transient activation for its opener.

Open PiP window getDisplayMedia() — this window

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