Document persistence for iframes when the node is moved in the DOM

Hi all,

I have long understood that iframes "reload" when being moved around the
DOM (i.e https://dl.dropboxusercontent.com/u/1062618/document-bye.mp4).
This weekend I went down the rabbit hole on this topic.

I believe this "reload" is a perceptual reload, and what is going on behind
the scenes is a fresh document being created for the iframe.

James Graham mentioned to me in the WHATWG IRC room that this is a browser
implementation, and that any user-perceivable behavior should be codified
into spec.

This is a persistent issue for web developers
<https://www.google.com/search?q=iframe+reload+dom+move&oq=iframe+re&aqs=chrome.0.69i59j0j69i57j0l3.1647j0j7&sourceid=chrome&es_sm=91&ie=UTF-8>,
and make iframes a leaky abstraction. I request that iframes persist their
document when moved around the DOM.

Eric Lewis
Intrepid Web Developer, Blogs Team
The New York Times
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