Sign in to Community
Sign in to view all badges
This is specifically a mobile web issue and not related to mobile apps. Have you followed the Apple documentation for web clips?
According to (https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/MobileHIG/IconMatrix...) the size of the web clip icon for an iPhone6S is 120x120.
I assume /etc/designs/my-project/images/apple-touch-icon-120x120.png can be accessed anonymously?
It is also possible this is a bug with iOS 9.