How to reproduce:

1. Open a new project
2. Import attached package
3. Open scene 1.unity
4. Attach the only 'Text' gameobject to the Text field in the InputTest component (attached to Main Camera)
5. Build to iOS and run
6. Click the 'Default' button in the top left corner
- The keyboard should appear on screen
7. Type anything in the keyboard and press 'Done'
- The text should appear in the Input box as if it was typed there, however it does not

- Reproduced in Version 5.2.4f1 (98095704e6fe), Version 5.4.0b18 (cdaae1c8e465), Version 5.3.5p1 (c851d0cdbe93) on an iPhone 5 (iOS 9.2), iPhone 6+ (iOS 9.3.1), iPad Air 2 (iOS 8.1), iPad Pro (iOS 9.2.1)