{"action":"opened","issue":{"url":"https://api.github.com/repos/gorhill/uBlock/issues/1306","labels_url":"https://api.github.com/repos/gorhill/uBlock/issues/1306/labels{/name}","comments_url":"https://api.github.com/repos/gorhill/uBlock/issues/1306/comments","events_url":"https://api.github.com/repos/gorhill/uBlock/issues/1306/events","html_url":"https://github.com/gorhill/uBlock/issues/1306","id":129212284,"number":1306,"title":"Firefox Popups can't be closed","user":{"login":"IDKwhattoputhere","id":16030872,"avatar_url":"https://avatars.githubusercontent.com/u/16030872?v=3","gravatar_id":"","url":"https://api.github.com/users/IDKwhattoputhere","html_url":"https://github.com/IDKwhattoputhere","followers_url":"https://api.github.com/users/IDKwhattoputhere/followers","following_url":"https://api.github.com/users/IDKwhattoputhere/following{/other_user}","gists_url":"https://api.github.com/users/IDKwhattoputhere/gists{/gist_id}","starred_url":"https://api.github.com/users/IDKwhattoputhere/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/IDKwhattoputhere/subscriptions","organizations_url":"https://api.github.com/users/IDKwhattoputhere/orgs","repos_url":"https://api.github.com/users/IDKwhattoputhere/repos","events_url":"https://api.github.com/users/IDKwhattoputhere/events{/privacy}","received_events_url":"https://api.github.com/users/IDKwhattoputhere/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-01-27T17:20:35Z","updated_at":"2016-01-27T17:20:35Z","closed_at":null,"body":"Issue: Firefox will occasionally prevent popups from being blocked by uBO.\r\nSame as here: https://github.com/gorhill/uBlock/issues/1201#issuecomment-170393394\r\n\r\nScreenshot: ![](https://cloud.githubusercontent.com/assets/16030872/12620755/d027648e-c51d-11e5-89fb-5df941c11d93.jpg)\r\nDemonstration: https://u.pomf.is/efngkf.mp4\r\nLogger: ![](https://cloud.githubusercontent.com/assets/16030872/12621643/bf21d544-c521-11e5-8d5b-62492b06d537.png)\r\n\r\nMy specs:\r\nFirefox ESR 38.5.2 (fresh profile)\r\nuBO 1.5.5 in standard configuration with updated filter lists\r\nAlso tried uBO 1.6.0b8 in standard configuration with updated filter lists\r\nWindows 7\r\n\r\nHow to reproduce:\r\n1. Install Firefox and uBO and update it's filter lists\r\n2. Open a new tab while keeping the old one open. You should now have two tabs open. In the new tab visit a site like [NSFW] http://javhub.net/play/d122f1105/55c458aa6fb5fc4e25a6ad74/JUX-626-F-of-beauty-milf-play-with-temptation-younger-man-boss-Dirty-cum-Chaoyang-Mizuno\r\n3. Click the play button and recognize a popup being opened\r\n4. Firefox asks if 2 tabs should be closed and hinders the popup from being closed\r\n5. Click any of the two given options since that's all the browser will react to\r\n\r\nYou may have to try this multiple times with deleting cookies in between since the popup will get blocked correctly sometimes.\r\n\r\nIssue does not arise in Chrome or Chromium."}}