{"action":"created","issue":{"url":"https://api.github.com/repos/mobxjs/mobx/issues/2074","repository_url":"https://api.github.com/repos/mobxjs/mobx","labels_url":"https://api.github.com/repos/mobxjs/mobx/issues/2074/labels{/name}","comments_url":"https://api.github.com/repos/mobxjs/mobx/issues/2074/comments","events_url":"https://api.github.com/repos/mobxjs/mobx/issues/2074/events","html_url":"https://github.com/mobxjs/mobx/issues/2074","id":479697291,"node_id":"MDU6SXNzdWU0Nzk2OTcyOTE=","number":2074,"title":"Modification exception: the internal structure of an observable array was changed","user":{"login":"foxhound87","id":1292494,"node_id":"MDQ6VXNlcjEyOTI0OTQ=","avatar_url":"https://avatars3.githubusercontent.com/u/1292494?v=4","gravatar_id":"","url":"https://api.github.com/users/foxhound87","html_url":"https://github.com/foxhound87","followers_url":"https://api.github.com/users/foxhound87/followers","following_url":"https://api.github.com/users/foxhound87/following{/other_user}","gists_url":"https://api.github.com/users/foxhound87/gists{/gist_id}","starred_url":"https://api.github.com/users/foxhound87/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/foxhound87/subscriptions","organizations_url":"https://api.github.com/users/foxhound87/orgs","repos_url":"https://api.github.com/users/foxhound87/repos","events_url":"https://api.github.com/users/foxhound87/events{/privacy}","received_events_url":"https://api.github.com/users/foxhound87/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2019-08-12T15:04:46Z","updated_at":"2019-08-14T03:13:09Z","closed_at":"2019-08-14T03:13:09Z","author_association":"NONE","body":"After updating mobx from version 4 to 5, I get this error when using lodash `pull` on an array.\r\nThe array is a property of a MST model.\r\n\r\n```\r\nUncaught Error: [mobx] Modification exception: the internal structure of an observable array was changed.\r\n    at ObservableArrayAdministration.updateArrayLength (mobx.module.js:3383)\r\n    at ObservableArrayAdministration.spliceWithArray (mobx.module.js:3415)\r\n    at Proxy.push (mobx.module.js:3551)\r\n    at Object._push (SelectCollectionHandler.js:24)\r\n    at executeAction (mobx.module.js:703)\r\n    at res (mobx.module.js:691)\r\n    at runMiddleWares (mobx-state-tree.module.js:3001)\r\n    at runWithActionContext (mobx-state-tree.module.js:2841)\r\n    at Object.res (mobx-state-tree.module.js:2869)\r\n    at Select.toggleCheckbox (Checkbox.js:7)\r\n```\r\n"},"comment":{"url":"https://api.github.com/repos/mobxjs/mobx/issues/comments/521085825","html_url":"https://github.com/mobxjs/mobx/issues/2074#issuecomment-521085825","issue_url":"https://api.github.com/repos/mobxjs/mobx/issues/2074","id":521085825,"node_id":"MDEyOklzc3VlQ29tbWVudDUyMTA4NTgyNQ==","user":{"login":"FredyC","id":1096340,"node_id":"MDQ6VXNlcjEwOTYzNDA=","avatar_url":"https://avatars0.githubusercontent.com/u/1096340?v=4","gravatar_id":"","url":"https://api.github.com/users/FredyC","html_url":"https://github.com/FredyC","followers_url":"https://api.github.com/users/FredyC/followers","following_url":"https://api.github.com/users/FredyC/following{/other_user}","gists_url":"https://api.github.com/users/FredyC/gists{/gist_id}","starred_url":"https://api.github.com/users/FredyC/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/FredyC/subscriptions","organizations_url":"https://api.github.com/users/FredyC/orgs","repos_url":"https://api.github.com/users/FredyC/repos","events_url":"https://api.github.com/users/FredyC/events{/privacy}","received_events_url":"https://api.github.com/users/FredyC/received_events","type":"User","site_admin":false},"created_at":"2019-08-14T03:13:09Z","updated_at":"2019-08-14T03:13:09Z","author_association":"CONTRIBUTOR","body":"Please, open the issue at mobx-state-tree, thanks :) "}}
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