Reproduction steps:
1. Open the attached project "New Unity Project";
2. Open the aaa.unity scene;
3. Build the asset bundles of this scene (Assets->Build AssetBundles);
4. Open the Build settings of the project, choose iOS build and build the project;
5. Run the built project on the device (doesn't matter which one);
6. Observe the output in the Console.

Expected results: the built project is playing without any issues;
Actual results: after running, the Console displays several errors:
"Could not produce class with ID ..."

Reproduced on: 2017.1.3p4, 2017.2.2p4, 2017.3.2f1, 2017.4.2f2, 2018.1.0f2, 2018.2.0b2.
Tested with iPhone 5s (iOS 9.3.3) and iPhone 7 Plus 10.3.1.

Won't Fix: The case won't be fixed, as this issue has low user pain and is not planned to dedicate time and resources to fix this. The log does ask the user to try disabling Strip Engine Code.