User Agent: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.114 Safari/537.36 Steps to reproduce: 1. Launch settings app. 2. Click 'Keyboards', there is a slight lag transition. 3. And click 'Built-in Keyboard', there is a lag transition also. 4. Back from 'Built-in Keyboard' UI, there still is a transition. Please see the video attached.