Content with the "iOS Simulator" window when scaling for Retina in macOS Guest. When running El Capitan (10.11.6) on both the host and as Guest OS in Parallels 12.1.1, enabling Retina scaling within the virtual Mac causes the iOS Simulator 9.3 app used with Xcode 7.3.1 to scale improperly. The content within the Simulator is scaled very large, but the simulator's window cannot display it all and cannot be resized larger. So most of the iOS content is out-of-sight off-screen. The bug is repeatable, and easy to see. Just switch between radio buttons in the Parallels configuration panel > Hardware > Graphics > Resolution. Switch between the "Best for Retina display" and "Scaled". The content within the Parallels 12 in earlier versions had other bugs with their new support for supporting Retina within a VM running macOS, but has been improved with various updates. This is the only serious bug impairing my work currently.
