{"action":"opened","issue":{"url":"https://api.github.com/repos/Polymer/polymer/issues/2680","labels_url":"https://api.github.com/repos/Polymer/polymer/issues/2680/labels{/name}","comments_url":"https://api.github.com/repos/Polymer/polymer/issues/2680/comments","events_url":"https://api.github.com/repos/Polymer/polymer/issues/2680/events","html_url":"https://github.com/Polymer/polymer/issues/2680","id":115044463,"number":2680,"title":"Unable to notify two elements about same splice: Uncaught Error: unexpected key undefined","user":{"login":"miyconst","id":6435556,"avatar_url":"https://avatars.githubusercontent.com/u/6435556?v=3","gravatar_id":"","url":"https://api.github.com/users/miyconst","html_url":"https://github.com/miyconst","followers_url":"https://api.github.com/users/miyconst/followers","following_url":"https://api.github.com/users/miyconst/following{/other_user}","gists_url":"https://api.github.com/users/miyconst/gists{/gist_id}","starred_url":"https://api.github.com/users/miyconst/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/miyconst/subscriptions","organizations_url":"https://api.github.com/users/miyconst/orgs","repos_url":"https://api.github.com/users/miyconst/repos","events_url":"https://api.github.com/users/miyconst/events{/privacy}","received_events_url":"https://api.github.com/users/miyconst/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-11-04T12:40:23Z","updated_at":"2015-11-04T12:40:23Z","closed_at":null,"body":"On my page I have two `<template is=\"dom-bind\">` which bound to same model with an array.\r\n\r\nWhen an array item being removed by third party library I notify the templates with `_notifySplice` method. Everything works fine under Polymer 1.1.x, but Polymer 1.2.x fails to notify second template with the following exception:\r\n\r\n```\r\nUncaught Error: unexpected key undefined\r\n```\r\n\r\nHere is a fiddle to demonstrate the exception: http://fiddle.jshell.net/417e3ybz/.\r\n\r\nBefore you ask: I do need two or more `dom-bind` templates on same page, and yes, they have to be bound to same model."}}