Reproduction steps:
1. Open the attached project.
2. Play the 'Test' scene.
3. Check the Console.
- modules=[Test.dll] (Assembly.GetModule)
- module=Test.dll (Assembly.GetModule("Test"))
4. Go to iOS player settings.
5. Change Target SDK from Simulator SDK to Device SDK.
6. Build and run for iOS device.
7. Check the Xcode console.
- modules=[Test.dll]
- module=

Reproduced with:
IL2CPP (Tested with iOS)
2017.1.0b1, 2017.3.0a7

Not reproducible with:
Mono (Tested with macOS)