{"action":"opened","issue":{"url":"https://api.github.com/repos/atom/electron/issues/2555","labels_url":"https://api.github.com/repos/atom/electron/issues/2555/labels{/name}","comments_url":"https://api.github.com/repos/atom/electron/issues/2555/comments","events_url":"https://api.github.com/repos/atom/electron/issues/2555/events","html_url":"https://github.com/atom/electron/issues/2555","id":102477420,"number":2555,"title":"[OSX] Strange constraint error","user":{"login":"ducky427","id":83426,"avatar_url":"https://avatars.githubusercontent.com/u/83426?v=3","gravatar_id":"","url":"https://api.github.com/users/ducky427","html_url":"https://github.com/ducky427","followers_url":"https://api.github.com/users/ducky427/followers","following_url":"https://api.github.com/users/ducky427/following{/other_user}","gists_url":"https://api.github.com/users/ducky427/gists{/gist_id}","starred_url":"https://api.github.com/users/ducky427/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ducky427/subscriptions","organizations_url":"https://api.github.com/users/ducky427/orgs","repos_url":"https://api.github.com/users/ducky427/repos","events_url":"https://api.github.com/users/ducky427/events{/privacy}","received_events_url":"https://api.github.com/users/ducky427/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-08-21T23:06:22Z","updated_at":"2015-08-21T23:06:22Z","closed_at":null,"body":"Hi,\r\nI am using Electron v0.30.5 on Mac OSX 10.10.5. \r\n\r\nI have a complex electron app and on one page, on a button press, a dialog window is launched. When that happens, I get the following in the terminal from where the app is launched. The app itself doesn't crash. But this warning is printed:\r\n\r\n```\r\n2015-08-22 00:00:36.149 Electron[97698:1317067] Unable to simultaneously satisfy constraints:\r\n(\r\n    \"<NSAutoresizingMaskLayoutConstraint:0x7f93028f3e30 h=--& v=--& V:[FI_TBrowserBackgroundView:0x7f93006b80b0(0)]>\",\r\n    \"<NSAutoresizingMaskLayoutConstraint:0x7f93028d3770 h=-&- v=-&- V:|-(0)-[FI_TListScrollView:0x7f9305027b90]   (Names: '|':FI_TBrowserBackgroundView:0x7f93006b80b0 )>\",\r\n    \"<NSAutoresizingMaskLayoutConstraint:0x7f93028d3720 h=-&- v=-&- V:[FI_TListScrollView:0x7f9305027b90]-(0)-|   (Names: '|':FI_TBrowserBackgroundView:0x7f93006b80b0 )>\",\r\n    \"<NSAutoresizingMaskLayoutConstraint:0x7f93028f5080 h=-&- v=-&- V:[NSClipView:0x7f93005955c0]-(15)-|   (Names: '|':FI_TListScrollView:0x7f9305027b90 )>\",\r\n    \"<NSAutoresizingMaskLayoutConstraint:0x7f93028f5030 h=-&- v=-&- V:|-(0)-[NSClipView:0x7f93005955c0]   (Names: '|':FI_TListScrollView:0x7f9305027b90 )>\"\r\n)\r\n\r\nWill attempt to recover by breaking constraint\r\n<NSAutoresizingMaskLayoutConstraint:0x7f93028f5080 h=-&- v=-&- V:[NSClipView:0x7f93005955c0]-(15)-|   (Names: '|':FI_TListScrollView:0x7f9305027b90 )>\r\n\r\nSet the NSUserDefault NSConstraintBasedLayoutVisualizeMutuallyExclusiveConstraints to YES to have -[NSWindow visualizeConstraints:] automatically called when this happens.  And/or, break on objc_exception_throw to catch this in the debugger.\r\n```\r\n\r\nI am coming back to this project after a while and the strange thing is I don't remember seeing this warning a while back. Could it be that updating to OS X 10.10.5, which was released on 13th August, has caused this issue?\r\n\r\nThanks!"}}