{"action":"closed","issue":{"url":"https://api.github.com/repos/phetsims/color-vision/issues/75","repository_url":"https://api.github.com/repos/phetsims/color-vision","labels_url":"https://api.github.com/repos/phetsims/color-vision/issues/75/labels{/name}","comments_url":"https://api.github.com/repos/phetsims/color-vision/issues/75/comments","events_url":"https://api.github.com/repos/phetsims/color-vision/issues/75/events","html_url":"https://github.com/phetsims/color-vision/issues/75","id":41447359,"number":75,"title":"Slight lag when turning light on and off","user":{"login":"bryo5363","id":7717368,"avatar_url":"https://avatars.githubusercontent.com/u/7717368?v=3","gravatar_id":"","url":"https://api.github.com/users/bryo5363","html_url":"https://github.com/bryo5363","followers_url":"https://api.github.com/users/bryo5363/followers","following_url":"https://api.github.com/users/bryo5363/following{/other_user}","gists_url":"https://api.github.com/users/bryo5363/gists{/gist_id}","starred_url":"https://api.github.com/users/bryo5363/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bryo5363/subscriptions","organizations_url":"https://api.github.com/users/bryo5363/orgs","repos_url":"https://api.github.com/users/bryo5363/repos","events_url":"https://api.github.com/users/bryo5363/events{/privacy}","received_events_url":"https://api.github.com/users/bryo5363/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/phetsims/color-vision/labels/status:fixed-pending-testing","name":"status:fixed-pending-testing","color":"00FFCC"},{"url":"https://api.github.com/repos/phetsims/color-vision/labels/type:performance","name":"type:performance","color":"8B1C62"}],"state":"closed","locked":false,"assignee":{"login":"bryo5363","id":7717368,"avatar_url":"https://avatars.githubusercontent.com/u/7717368?v=3","gravatar_id":"","url":"https://api.github.com/users/bryo5363","html_url":"https://github.com/bryo5363","followers_url":"https://api.github.com/users/bryo5363/followers","following_url":"https://api.github.com/users/bryo5363/following{/other_user}","gists_url":"https://api.github.com/users/bryo5363/gists{/gist_id}","starred_url":"https://api.github.com/users/bryo5363/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bryo5363/subscriptions","organizations_url":"https://api.github.com/users/bryo5363/orgs","repos_url":"https://api.github.com/users/bryo5363/repos","events_url":"https://api.github.com/users/bryo5363/events{/privacy}","received_events_url":"https://api.github.com/users/bryo5363/received_events","type":"User","site_admin":false},"milestone":null,"comments":6,"created_at":"2014-08-28T21:40:09Z","updated_at":"2016-02-17T17:28:10Z","closed_at":"2016-02-17T17:28:09Z","body":"Test device: MacBook Pro\r\n\r\nOperating System: OSX 10.9.4\r\n\r\nBrowser: Chrome 36.0.1985.143\r\n\r\nProblem description: When turning the light on and off there is a slight lag and the observer still sees the color that was present prior to turning the light off.\r\n\r\nSteps to reproduce:\r\n-Open sim\r\n-Turn on filter\r\n-Match photon color to filter color\r\n-Turn on light. \r\n-Turn off light\r\n-Once the last of the photons have reached the observer, turn the light on again. The observer will register seeing the color even though there is no stream of photons hitting him/her. \r\nSeverity:\r\n\r\nScreenshots:\r\n![screen shot 2014-08-28 at 3 39 46 pm](https://cloud.githubusercontent.com/assets/7717368/4083465/e0cd9498-2efb-11e4-8854-85a0e59d9ba9.png)\r\n\r\nTroubleshooting information (do not edit):\r\nName: Color Vision\r\nURL: http://www.colorado.edu/physics/phet/dev/html/color-vision/1.0.0-rc.2/color-vision_en.html\r\nVersion: 1.0.0-rc.2\r\nFeatures missing: touch\r\nUser Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.143 Safari/537.36\r\nLanguage: en-US\r\nWindow: 941x637\r\nPixel Ratio: 1/1\r\nWebGL: WebGL 1.0 (OpenGL ES 2.0 Chromium)\r\nGLSL: WebGL GLSL ES 1.0 (OpenGL ES GLSL ES 1.0 Chromium)\r\nVendor: WebKit (WebKit WebGL)\r\nVertex: attribs: 16 varying: 15 uniform: 1024\r\nTexture: size: 4096 imageUnits: 16 (vertex: 16, combined: 16)\r\nMax viewport: 8192x8192\r\nOES_texture_float: true"}}