{"action":"opened","issue":{"url":"https://api.github.com/repos/gorhill/uMatrix/issues/674","repository_url":"https://api.github.com/repos/gorhill/uMatrix","labels_url":"https://api.github.com/repos/gorhill/uMatrix/issues/674/labels{/name}","comments_url":"https://api.github.com/repos/gorhill/uMatrix/issues/674/comments","events_url":"https://api.github.com/repos/gorhill/uMatrix/issues/674/events","html_url":"https://github.com/gorhill/uMatrix/issues/674","id":192640249,"number":674,"title":"mail.com + uMatrix cause Firefox to completely hang or almost crash","user":{"login":"AdKiller","id":13304436,"avatar_url":"https://avatars.githubusercontent.com/u/13304436?v=3","gravatar_id":"","url":"https://api.github.com/users/AdKiller","html_url":"https://github.com/AdKiller","followers_url":"https://api.github.com/users/AdKiller/followers","following_url":"https://api.github.com/users/AdKiller/following{/other_user}","gists_url":"https://api.github.com/users/AdKiller/gists{/gist_id}","starred_url":"https://api.github.com/users/AdKiller/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/AdKiller/subscriptions","organizations_url":"https://api.github.com/users/AdKiller/orgs","repos_url":"https://api.github.com/users/AdKiller/repos","events_url":"https://api.github.com/users/AdKiller/events{/privacy}","received_events_url":"https://api.github.com/users/AdKiller/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-11-30T18:17:45Z","updated_at":"2016-11-30T18:17:45Z","closed_at":null,"body":"It's been about a week that I can not use Mail.com when uMatrix filtering is enabled. (I know it is a crappy service and I am going to stop using it, but I thought to report this issue so that it might lead to improving uMatrix)\r\n\r\nThe aforementioned combination causes prolonged unresponsiveness in Firefox to the point that I have to kill firefox.exe\r\n\r\nTried with a brand new Firefox profile, and uMatrix as the only addon, filters updated to the latest version. \r\n\r\nWhen I turn off uMatrix filtering, mail.com works.\r\n\r\nFirefox message:\r\n\r\n> A script on this page may be busy, or it may have stopped responding. You can stop the script now, open the script in the debugger, or let the script continue.\r\n> \r\n> https://img.ui-portal.de/pos-cdn/mailcom/core/latest/poseidon-814a8194.min.js:6\r\n\r\n[poseidon-814a8194.min.js.txt](https://github.com/gorhill/uMatrix/files/622595/poseidon-814a8194.min.js.txt)\r\n\r\n![mail com error 1](https://cloud.githubusercontent.com/assets/13304436/20765015/f2822f90-b730-11e6-8ca4-8c0b50019a8b.jpg)\r\n![mail com error 2](https://cloud.githubusercontent.com/assets/13304436/20765019/f7420fa0-b730-11e6-866e-a26650fa6939.jpg)\r\n![taskmgr firefox](https://cloud.githubusercontent.com/assets/13304436/20765020/f9c69534-b730-11e6-8c0e-347841eda351.jpg)\r\n\r\nFirefox 50.0.1\r\nuMatrix 0.9.3.6\r\nWindows 10 Pro v1511\r\n"}}
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