{"action":"created","issue":{"url":"https://api.github.com/repos/facebook/react/issues/8626","repository_url":"https://api.github.com/repos/facebook/react","labels_url":"https://api.github.com/repos/facebook/react/issues/8626/labels{/name}","comments_url":"https://api.github.com/repos/facebook/react/issues/8626/comments","events_url":"https://api.github.com/repos/facebook/react/issues/8626/events","html_url":"https://github.com/facebook/react/issues/8626","id":197168524,"number":8626,"title":"Strange performance problem in Google Chrome - putListener appears in the timeline","user":{"login":"mstijak","id":433394,"avatar_url":"https://avatars1.githubusercontent.com/u/433394?v=3","gravatar_id":"","url":"https://api.github.com/users/mstijak","html_url":"https://github.com/mstijak","followers_url":"https://api.github.com/users/mstijak/followers","following_url":"https://api.github.com/users/mstijak/following{/other_user}","gists_url":"https://api.github.com/users/mstijak/gists{/gist_id}","starred_url":"https://api.github.com/users/mstijak/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mstijak/subscriptions","organizations_url":"https://api.github.com/users/mstijak/orgs","repos_url":"https://api.github.com/users/mstijak/repos","events_url":"https://api.github.com/users/mstijak/events{/privacy}","received_events_url":"https://api.github.com/users/mstijak/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":4,"created_at":"2016-12-22T12:53:38Z","updated_at":"2017-03-02T12:35:30Z","closed_at":null,"body":"**Do you want to request a *feature* or report a *bug*?**\r\n\r\nA performance problem in the latest Chrome on Windows 10. Firefox/Edge work fine.\r\n\r\n**What is the current behavior?**\r\nChrome freezes for a few seconds on the second render. \r\n\r\n**If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem via https://jsfiddle.net or similar (template: https://jsfiddle.net/reactjs/69z2wepo/).**\r\n\r\nPlease open http://pink-wren.surge.sh/.\r\n\r\nIn the first input type 2. This will cause that all items to be redrawn.\r\nObserve how browser freezes for a few seconds. \r\nAfterward, everything works fine.\r\n\r\nChrome Inspector timeline reveals strange React behavior.\r\n\r\n![image](https://cloud.githubusercontent.com/assets/433394/21426157/84cdf686-c84d-11e6-9958-54ecb5747689.png)\r\n\r\n**What is the expected behavior?**\r\nThis should not happen.\r\n\r\n**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**\r\n\r\nI tried React 15.4.1 and 15.3.1 on Windows 10."},"comment":{"url":"https://api.github.com/repos/facebook/react/issues/comments/283642174","html_url":"https://github.com/facebook/react/issues/8626#issuecomment-283642174","issue_url":"https://api.github.com/repos/facebook/react/issues/8626","id":283642174,"user":{"login":"gaearon","id":810438,"avatar_url":"https://avatars3.githubusercontent.com/u/810438?v=3","gravatar_id":"","url":"https://api.github.com/users/gaearon","html_url":"https://github.com/gaearon","followers_url":"https://api.github.com/users/gaearon/followers","following_url":"https://api.github.com/users/gaearon/following{/other_user}","gists_url":"https://api.github.com/users/gaearon/gists{/gist_id}","starred_url":"https://api.github.com/users/gaearon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gaearon/subscriptions","organizations_url":"https://api.github.com/users/gaearon/orgs","repos_url":"https://api.github.com/users/gaearon/repos","events_url":"https://api.github.com/users/gaearon/events{/privacy}","received_events_url":"https://api.github.com/users/gaearon/received_events","type":"User","site_admin":false},"created_at":"2017-03-02T12:35:30Z","updated_at":"2017-03-02T12:35:30Z","body":"https://github.com/facebook/react/commit/64e7602b3b9af9a43fd2f3495d3b13a398bb94d9 was released in 15.3. GitHub's branch display for commits is messed up.\r\n\r\n16 alpha is completely rewritten so maybe it doesn't hit some bad path, but it would be nice to learn what's causing this.\r\n\r\nI'd like to reopen so that we can at least investigate some time in the future and confirm what was causing this."}}
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