Reproduction steps:
1. Open the attached project.
2. Play the "main" scene.
3. Type "3" into the input box.
4. Click "Load".
5. Stop the scene.
6. Wait for 4 seconds.
7. Play the scene again.
8. Check the "Canvas > RawImage > Text" object in the scene.

Actual behavior: In cache = true
Expected behavior: In cache = false

Reproduced with:
5.6.2f1, 2017.1.0b10, 2017.2.0a4

Not reproducible with:
5.5.4p1

Regression introduced in:
5.6

Note:
It was possible to workaround this issue in 5.6 by setting expirationDelay on Start.