fieldset.elements should return an HTMLCollection instead of an HTMLFormControlsCollection: - https://github.com/whatwg/html/commit/8beedf0c2ffd38853caddec67490288f47afc8eb Gecko has already behaved this way. Blink aligned with Gecko and the HTML specification in December 2016: - https://bugs.chromium.org/p/chromium/issues/detail?id=665291
Test case: http://w3c-test.org/html/semantics/forms/the-fieldset-element/HTMLFieldSetElement.html Passes in both Chrome and Firefox, fails in Safari.
Created attachment 351436 [details] Patch
Created attachment 351449 [details] Patch
Comment on attachment 351449 [details] Patch Clearing flags on attachment: 351449 Committed r236778: <https://trac.webkit.org/changeset/236778>
All reviewed patches have been landed. Closing bug.
<rdar://problem/44959731>