It's good to see this was recognised as a bug and quickly fixed. Meanwhile in spec-adhering Promise land, a similar problem still exists [1], which is why I recently banished es6-promise, and in turn fetch/fetch-polynomial from my codebases.<p>[1] <a href="http://requirebin.com/?gist=8f13d5147c1c252ab1691115bfa8b7c5" rel="nofollow">http://requirebin.com/?gist=8f13d5147c1c252ab1691115bfa8b7c5</a>