{"action":"created","issue":{"url":"https://api.github.com/repos/slightlyoff/IntersectionObserver/issues/50","labels_url":"https://api.github.com/repos/slightlyoff/IntersectionObserver/issues/50/labels{/name}","comments_url":"https://api.github.com/repos/slightlyoff/IntersectionObserver/issues/50/comments","events_url":"https://api.github.com/repos/slightlyoff/IntersectionObserver/issues/50/events","html_url":"https://github.com/slightlyoff/IntersectionObserver/issues/50","id":110710664,"number":50,"title":"The requirement for target to be a descendant of [[root]] seems to ignore mutations","user":{"login":"bzbarsky","id":1457979,"avatar_url":"https://avatars.githubusercontent.com/u/1457979?v=3","gravatar_id":"","url":"https://api.github.com/users/bzbarsky","html_url":"https://github.com/bzbarsky","followers_url":"https://api.github.com/users/bzbarsky/followers","following_url":"https://api.github.com/users/bzbarsky/following{/other_user}","gists_url":"https://api.github.com/users/bzbarsky/gists{/gist_id}","starred_url":"https://api.github.com/users/bzbarsky/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bzbarsky/subscriptions","organizations_url":"https://api.github.com/users/bzbarsky/orgs","repos_url":"https://api.github.com/users/bzbarsky/repos","events_url":"https://api.github.com/users/bzbarsky/events{/privacy}","received_events_url":"https://api.github.com/users/bzbarsky/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2015-10-09T18:12:50Z","updated_at":"2015-10-09T18:29:35Z","closed_at":null,"body":"`observe()` requires _target_ to be a descendant of `[[root]]` and the processing model in http://rawgit.com/slightlyoff/IntersectionObserver/master/index.html#3-3-event-loop assumes that the _target_ is a descendant of `[[root]]` but nothing enforces that the ancestors of _target_ don't change between the `observe()` call and the event loop processing."},"comment":{"url":"https://api.github.com/repos/slightlyoff/IntersectionObserver/issues/comments/146955322","html_url":"https://github.com/slightlyoff/IntersectionObserver/issues/50#issuecomment-146955322","issue_url":"https://api.github.com/repos/slightlyoff/IntersectionObserver/issues/50","id":146955322,"user":{"login":"domenic","id":617481,"avatar_url":"https://avatars.githubusercontent.com/u/617481?v=3","gravatar_id":"","url":"https://api.github.com/users/domenic","html_url":"https://github.com/domenic","followers_url":"https://api.github.com/users/domenic/followers","following_url":"https://api.github.com/users/domenic/following{/other_user}","gists_url":"https://api.github.com/users/domenic/gists{/gist_id}","starred_url":"https://api.github.com/users/domenic/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/domenic/subscriptions","organizations_url":"https://api.github.com/users/domenic/orgs","repos_url":"https://api.github.com/users/domenic/repos","events_url":"https://api.github.com/users/domenic/events{/privacy}","received_events_url":"https://api.github.com/users/domenic/received_events","type":"User","site_admin":false},"created_at":"2015-10-09T18:29:35Z","updated_at":"2015-10-09T18:29:35Z","body":"> Also, it should be clear that it's invoking the canonical unobserve method, not just doing .unobserve(), right?\r\n\r\nI'll open a separate issue for that; noticed it in a couple of places."}}