{"action":"opened","issue":{"url":"https://api.github.com/repos/PolymerElements/app-layout/issues/273","repository_url":"https://api.github.com/repos/PolymerElements/app-layout","labels_url":"https://api.github.com/repos/PolymerElements/app-layout/issues/273/labels{/name}","comments_url":"https://api.github.com/repos/PolymerElements/app-layout/issues/273/comments","events_url":"https://api.github.com/repos/PolymerElements/app-layout/issues/273/events","html_url":"https://github.com/PolymerElements/app-layout/issues/273","id":165907136,"number":273,"title":"Uncaught TypeError in polymer-mini.html:2044","user":{"login":"5amfung","id":371691,"avatar_url":"https://avatars.githubusercontent.com/u/371691?v=3","gravatar_id":"","url":"https://api.github.com/users/5amfung","html_url":"https://github.com/5amfung","followers_url":"https://api.github.com/users/5amfung/followers","following_url":"https://api.github.com/users/5amfung/following{/other_user}","gists_url":"https://api.github.com/users/5amfung/gists{/gist_id}","starred_url":"https://api.github.com/users/5amfung/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/5amfung/subscriptions","organizations_url":"https://api.github.com/users/5amfung/orgs","repos_url":"https://api.github.com/users/5amfung/repos","events_url":"https://api.github.com/users/5amfung/events{/privacy}","received_events_url":"https://api.github.com/users/5amfung/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-07-16T04:05:23Z","updated_at":"2016-07-16T04:05:23Z","closed_at":null,"body":"<!-- Instructions: https://github.com/PolymerElements/app-layout/CONTRIBUTING.md#filing-issues -->\r\n### Description\r\n\r\nI have the basic app drawer layout setup but I keep getting this from the console.\r\n\r\n![image](https://cloud.githubusercontent.com/assets/371691/16637632/442d1f86-4395-11e6-8569-034dd3d83fd4.png)\r\n\r\n\r\nThis is the html I have:\r\n```\r\n<app-drawer-layout>\r\n    <app-drawer>\r\n        <app-toolbar style=\"background-color: #4285f4; color: white;\">My App</app-toolbar>\r\n    </app-drawer>\r\n\r\n    <app-header-layout>\r\n        <app-header reveals effects=\"waterfall\">\r\n            <app-toolbar>\r\n                <paper-icon-button icon=\"menu\" drawer-toggle></paper-icon-button>\r\n                <div title>{{ title }}</div>\r\n                <paper-icon-button icon=\"search\"></paper-icon-button>\r\n            </app-toolbar>\r\n        </app-header>\r\n\r\n        <!-- Main content -->\r\n        <div class=\"layout vertical\" style=\"padding: 16px;\">\r\n            <router-outlet></router-outlet>\r\n        </div>\r\n    </app-header-layout>\r\n\r\n</app-drawer-layout>\r\n\r\n```\r\n\r\nI used https://github.com/vaadin/angular2-polymer to load the component in my angular2 project.\r\n\r\n### Expected outcome\r\n\r\nI expect no error from the console.\r\n\r\n### Actual outcome\r\n\r\npolymer-mini.html:2044 Uncaught TypeError: Cannot set property 'persistent' of undefined\r\n\r\n### Live Demo\r\n<!-- Example: https://jsbin.com/cagaye/edit?html,output -->\r\n\r\n### Steps to reproduce\r\n\r\n<!-- Example\r\n1. Put a `paper-foo` element in the page.\r\n2. Open the page in a web browser.\r\n3. Click the `paper-foo` element.\r\n-->\r\n\r\n### Browsers Affected\r\n<!-- Check all that apply -->\r\n- [x] Chrome\r\n- [ ] Firefox\r\n- [ ] Safari 9\r\n- [ ] Safari 8\r\n- [ ] Safari 7\r\n- [ ] Edge\r\n- [ ] IE 11\r\n- [ ] IE 10\r\n"}}
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