Update: As of 1 st March, 2019 most bugs around escaping fullscreen mode have been resolved by Apple.
For example, getting access to a Safari emulator online on a Windows 10 laptop or an Opera emulator on a iOS 11 device is a nightmare for every QA tester and Developer. Similarly, having multiple browser versions across different OSes across different devices and hardware configurations can get really complex. MajorSecurity discovers a bug in iOS5 and 5.1 that allows users to be lured to a malicious site.
