{"action":"closed","issue":{"url":"https://api.github.com/repos/kkapsner/CanvasBlocker/issues/17","labels_url":"https://api.github.com/repos/kkapsner/CanvasBlocker/issues/17/labels{/name}","comments_url":"https://api.github.com/repos/kkapsner/CanvasBlocker/issues/17/comments","events_url":"https://api.github.com/repos/kkapsner/CanvasBlocker/issues/17/events","html_url":"https://github.com/kkapsner/CanvasBlocker/issues/17","id":56095265,"number":17,"title":"Hanging script reported  on browser startup","user":{"login":"Alexander--","id":1107390,"avatar_url":"https://avatars.githubusercontent.com/u/1107390?v=3","gravatar_id":"","url":"https://api.github.com/users/Alexander--","html_url":"https://github.com/Alexander--","followers_url":"https://api.github.com/users/Alexander--/followers","following_url":"https://api.github.com/users/Alexander--/following{/other_user}","gists_url":"https://api.github.com/users/Alexander--/gists{/gist_id}","starred_url":"https://api.github.com/users/Alexander--/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Alexander--/subscriptions","organizations_url":"https://api.github.com/users/Alexander--/orgs","repos_url":"https://api.github.com/users/Alexander--/repos","events_url":"https://api.github.com/users/Alexander--/events{/privacy}","received_events_url":"https://api.github.com/users/Alexander--/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2015-01-30T22:48:54Z","updated_at":"2015-03-26T18:29:21Z","closed_at":"2015-03-26T18:29:21Z","body":"The extension slows browser to crawl during startup. \"Script not responding\" alert mentions\r\n\r\n```\r\nresource://gre/modules/addons/XPIProvider.jsm -> jar:file:///home/uniqa/.mozilla/firefox/vhlwek37.default/extensions/CanvasBlocker@kkapsner.de.xpi!/bootstrap.js ->\r\nresource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/commonjs/sdk/loader/sandbox.js -> resource://gre/modules/commonjs/sdk/content/content-worker.js:335x\r\n```\r\n\r\nSame thing happens, when any Jetpack addon is (re)started. I believe, that one of causes lies in the fact, that CanvasBlocker ignores current state of tabs (it switches to tabs even when they are in background or unloaded). I am using \"fake readout api\" btw."}}