{"action":"created","issue":{"url":"https://api.github.com/repos/atom/atom/issues/13481","repository_url":"https://api.github.com/repos/atom/atom","labels_url":"https://api.github.com/repos/atom/atom/issues/13481/labels{/name}","comments_url":"https://api.github.com/repos/atom/atom/issues/13481/comments","events_url":"https://api.github.com/repos/atom/atom/issues/13481/events","html_url":"https://github.com/atom/atom/issues/13481","id":196893052,"number":13481,"title":"Extremely sluggish performance when dragging 'tabs' (splitting)","user":{"login":"cosmix","id":76265,"avatar_url":"https://avatars.githubusercontent.com/u/76265?v=3","gravatar_id":"","url":"https://api.github.com/users/cosmix","html_url":"https://github.com/cosmix","followers_url":"https://api.github.com/users/cosmix/followers","following_url":"https://api.github.com/users/cosmix/following{/other_user}","gists_url":"https://api.github.com/users/cosmix/gists{/gist_id}","starred_url":"https://api.github.com/users/cosmix/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cosmix/subscriptions","organizations_url":"https://api.github.com/users/cosmix/orgs","repos_url":"https://api.github.com/users/cosmix/repos","events_url":"https://api.github.com/users/cosmix/events{/privacy}","received_events_url":"https://api.github.com/users/cosmix/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2016-12-21T10:08:32Z","updated_at":"2016-12-21T16:24:39Z","closed_at":"2016-12-21T16:24:39Z","body":"### Prerequisites\r\n\r\n* [x] Can you reproduce the problem in [safe mode](http://flight-manual.atom.io/hacking-atom/sections/debugging/#using-safe-mode)?\r\n* [x] Are you running the [latest version of Atom](http://flight-manual.atom.io/hacking-atom/sections/debugging/#update-to-the-latest-version)?\r\n* [x] Did you check the [debugging guide](http://flight-manual.atom.io/hacking-atom/sections/debugging/)?\r\n* [x] Did you check the [FAQs on Discuss](https://discuss.atom.io/c/faq)?\r\n* [x] Are you reporting to the [correct repository](https://github.com/atom/atom/blob/master/CONTRIBUTING.md#atom-and-packages)?\r\n* [x] Did you [perform a cursory search](https://github.com/issues?q=is%3Aissue+user%3Aatom+-repo%3Aatom%2Felectron) to see if your bug or enhancement is already reported?\r\n\r\n### Description\r\n\r\nAtom freezes when 'dragging' tabs from one pane another (within the same window or across windows) or when attempting to create a pane through dragging.\r\n\r\n### Steps to Reproduce\r\n\r\n1. Launch Atom\r\n2. Open two files.\r\n3. Drag one of the tabs so that part of the existing editor viewport gets highlighted (split zone indicator).\r\n\r\n**Expected behavior:** [What you expected to happen]\r\n\r\nFast performance while dragging\r\n\r\n**Actual behavior:** [What actually happened]\r\n\r\nSluggish performance, very slow visual update of tab movement.\r\n\r\n### Versions\r\n\r\nThis issue is probably a regression. It started recently and manifests itself in 1.12.7 on macOS 10.12.2."},"comment":{"url":"https://api.github.com/repos/atom/atom/issues/comments/268566033","html_url":"https://github.com/atom/atom/issues/13481#issuecomment-268566033","issue_url":"https://api.github.com/repos/atom/atom/issues/13481","id":268566033,"user":{"login":"50Wliu","id":2766036,"avatar_url":"https://avatars.githubusercontent.com/u/2766036?v=3","gravatar_id":"","url":"https://api.github.com/users/50Wliu","html_url":"https://github.com/50Wliu","followers_url":"https://api.github.com/users/50Wliu/followers","following_url":"https://api.github.com/users/50Wliu/following{/other_user}","gists_url":"https://api.github.com/users/50Wliu/gists{/gist_id}","starred_url":"https://api.github.com/users/50Wliu/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/50Wliu/subscriptions","organizations_url":"https://api.github.com/users/50Wliu/orgs","repos_url":"https://api.github.com/users/50Wliu/repos","events_url":"https://api.github.com/users/50Wliu/events{/privacy}","received_events_url":"https://api.github.com/users/50Wliu/received_events","type":"User","site_admin":false},"created_at":"2016-12-21T16:24:39Z","updated_at":"2016-12-21T16:24:39Z","body":"This belongs on the [tabs](https://github.com/atom/tabs) repo - would you please move this issue there?  Thanks!"}}
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