{"action":"created","issue":{"url":"https://api.github.com/repos/highcharts/highcharts/issues/5007","repository_url":"https://api.github.com/repos/highcharts/highcharts","labels_url":"https://api.github.com/repos/highcharts/highcharts/issues/5007/labels{/name}","comments_url":"https://api.github.com/repos/highcharts/highcharts/issues/5007/comments","events_url":"https://api.github.com/repos/highcharts/highcharts/issues/5007/events","html_url":"https://github.com/highcharts/highcharts/issues/5007","id":131684290,"number":5007,"title":"Tooltip javascript error on 4.2.2 release","user":{"login":"xavadu","id":1382820,"avatar_url":"https://avatars.githubusercontent.com/u/1382820?v=3","gravatar_id":"","url":"https://api.github.com/users/xavadu","html_url":"https://github.com/xavadu","followers_url":"https://api.github.com/users/xavadu/followers","following_url":"https://api.github.com/users/xavadu/following{/other_user}","gists_url":"https://api.github.com/users/xavadu/gists{/gist_id}","starred_url":"https://api.github.com/users/xavadu/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/xavadu/subscriptions","organizations_url":"https://api.github.com/users/xavadu/orgs","repos_url":"https://api.github.com/users/xavadu/repos","events_url":"https://api.github.com/users/xavadu/events{/privacy}","received_events_url":"https://api.github.com/users/xavadu/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2016-02-05T16:13:28Z","updated_at":"2016-02-08T09:29:26Z","closed_at":null,"body":"Hello,\r\n\r\nSorry i don't have the time to reproduce the error at this moment later a lot of lost hours looking for a strange issue that started for nowhere.. \r\n\r\nI realize that it was because the version upgrade from 4.2.1 to 4.2.2 which was launched yesterday.\r\n\r\nAll works fine but when i go with the mouse to a data point in an area chart (i didn't test on oter kind of chart) i have this error on the console: _Uncaught_ TypeError: Cannot set property 'd' of null_ (the error is copy from the Chrome console but the issue is also in other browsers).\r\n\r\nThe problem is on that function:\r\n```\r\n        dSetter: function (value, key, element) {\r\n            if (value && value.join) { // join path\r\n                value = value.join(' ');\r\n            }\r\n            if (/(NaN| {2}|^$)/.test(value)) {\r\n                value = 'M 0 0';\r\n            }\r\n            element.setAttribute(key, value);\r\n\r\n            this[key] = value; // <--- here\r\n        },\r\n\r\n```\r\n\r\nWhat i can see is that later some iteration and maybe no the last iteration, the error is throw. The iteration start to happen when the user enter to the graph and the crosshair select a data point and the tooltip should be displayed.\r\n\r\nI am using highstock without any custom configuration for the pluggin.\r\nIf i can help in some other way, i will have more time on the weekend, just let it written. \r\n\r\nCheers."},"comment":{"url":"https://api.github.com/repos/highcharts/highcharts/issues/comments/181272085","html_url":"https://github.com/highcharts/highcharts/issues/5007#issuecomment-181272085","issue_url":"https://api.github.com/repos/highcharts/highcharts/issues/5007","id":181272085,"user":{"login":"TorsteinHonsi","id":227836,"avatar_url":"https://avatars.githubusercontent.com/u/227836?v=3","gravatar_id":"","url":"https://api.github.com/users/TorsteinHonsi","html_url":"https://github.com/TorsteinHonsi","followers_url":"https://api.github.com/users/TorsteinHonsi/followers","following_url":"https://api.github.com/users/TorsteinHonsi/following{/other_user}","gists_url":"https://api.github.com/users/TorsteinHonsi/gists{/gist_id}","starred_url":"https://api.github.com/users/TorsteinHonsi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/TorsteinHonsi/subscriptions","organizations_url":"https://api.github.com/users/TorsteinHonsi/orgs","repos_url":"https://api.github.com/users/TorsteinHonsi/repos","events_url":"https://api.github.com/users/TorsteinHonsi/events{/privacy}","received_events_url":"https://api.github.com/users/TorsteinHonsi/received_events","type":"User","site_admin":false},"created_at":"2016-02-08T09:29:26Z","updated_at":"2016-02-08T09:29:26Z","body":"I'm afraid I can't help you without a live reproduction, please start out with [this fiddle](http://jsfiddle.net/gh/get/jquery/1.9.1/highslide-software/highcharts.com/tree/master/samples/stock/demo/intraday-area/) and see if you can change it into something that breaks."}}