{"action":"created","issue":{"url":"https://api.github.com/repos/chaijs/chai/issues/799","repository_url":"https://api.github.com/repos/chaijs/chai","labels_url":"https://api.github.com/repos/chaijs/chai/issues/799/labels{/name}","comments_url":"https://api.github.com/repos/chaijs/chai/issues/799/comments","events_url":"https://api.github.com/repos/chaijs/chai/issues/799/events","html_url":"https://github.com/chaijs/chai/pull/799","id":176797067,"number":799,"title":"Return new assertion with flags copied over instead of this. 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PR addresses #791.\r\n\r\n- [x] `overwriteProperty`\r\n- [x] `overwriteMethod`\r\n- [x] `addChainableMethod`\r\n- [x] `overwriteChainableMethod`\r\n"},"comment":{"url":"https://api.github.com/repos/chaijs/chai/issues/comments/248042985","html_url":"https://github.com/chaijs/chai/pull/799#issuecomment-248042985","issue_url":"https://api.github.com/repos/chaijs/chai/issues/799","id":248042985,"user":{"login":"meeber","id":17260989,"avatar_url":"https://avatars.githubusercontent.com/u/17260989?v=3","gravatar_id":"","url":"https://api.github.com/users/meeber","html_url":"https://github.com/meeber","followers_url":"https://api.github.com/users/meeber/followers","following_url":"https://api.github.com/users/meeber/following{/other_user}","gists_url":"https://api.github.com/users/meeber/gists{/gist_id}","starred_url":"https://api.github.com/users/meeber/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/meeber/subscriptions","organizations_url":"https://api.github.com/users/meeber/orgs","repos_url":"https://api.github.com/users/meeber/repos","events_url":"https://api.github.com/users/meeber/events{/privacy}","received_events_url":"https://api.github.com/users/meeber/received_events","type":"User","site_admin":false},"created_at":"2016-09-19T16:26:23Z","updated_at":"2016-09-19T16:26:23Z","body":"I can't look at it closely right now but my quick guess is it's because IE 10.0 takes a different code path [here](https://github.com/chaijs/chai/blob/7683356fff853b0f661ec1fbdd69979c6f31aab2/lib/chai/utils/addChainableMethod.js#L96-L113), causing [this test](https://github.com/chaijs/chai/blob/7683356fff853b0f661ec1fbdd69979c6f31aab2/test/utilities.js#L1029) to fail."}}
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