{"action":"closed","issue":{"url":"https://api.github.com/repos/webpack/webpack/issues/2394","repository_url":"https://api.github.com/repos/webpack/webpack","labels_url":"https://api.github.com/repos/webpack/webpack/issues/2394/labels{/name}","comments_url":"https://api.github.com/repos/webpack/webpack/issues/2394/comments","events_url":"https://api.github.com/repos/webpack/webpack/issues/2394/events","html_url":"https://github.com/webpack/webpack/issues/2394","id":150862916,"number":2394,"title":"css class dissapears when using webpack.optimize.UglifyJsPlugin","user":{"login":"smmoosavi","id":1582954,"avatar_url":"https://avatars.githubusercontent.com/u/1582954?v=3","gravatar_id":"","url":"https://api.github.com/users/smmoosavi","html_url":"https://github.com/smmoosavi","followers_url":"https://api.github.com/users/smmoosavi/followers","following_url":"https://api.github.com/users/smmoosavi/following{/other_user}","gists_url":"https://api.github.com/users/smmoosavi/gists{/gist_id}","starred_url":"https://api.github.com/users/smmoosavi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/smmoosavi/subscriptions","organizations_url":"https://api.github.com/users/smmoosavi/orgs","repos_url":"https://api.github.com/users/smmoosavi/repos","events_url":"https://api.github.com/users/smmoosavi/events{/privacy}","received_events_url":"https://api.github.com/users/smmoosavi/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/webpack/webpack/labels/bug","name":"bug","color":"fc2929"}],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2016-04-25T13:41:25Z","updated_at":"2016-04-29T12:27:11Z","closed_at":"2016-04-29T12:27:11Z","body":"Here is the minimal gist: https://gist.github.com/smmoosavi/b9e2f647d995be3a2da8ee1751c134e3\r\n\r\nIf you [enable the UglifyJsPlugin ](https://gist.github.com/smmoosavi/b9e2f647d995be3a2da8ee1751c134e3#file-webpack-config-js-L20:L25), the produced css file will have 2 classes instead of 3. In fact class `._1gwPWr77dmf4i5iRBt9FXY` which corresponds to the `turquoise` class is missing.\r\n\r\nThe strange thing is the sensitivity to the exact word `turquoise` in [line 7 of style.scss](https://gist.github.com/smmoosavi/b9e2f647d995be3a2da8ee1751c134e3#file-style-scss-L7) before the colon. If you change it to anything else, the problem goes away. We did found this problem with word `turquoise` in other projects we were working on.\r\n"}}