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By Design

Votes

0

Found in

2021.2

2021.2.13f1

2021.3

2022.1

2022.2

Issue ID

1407312

Regression

No

Scripts within Assembly Defintions are missing when used by scenes in Asset Bundles and when the Project is built using IL2CPP

IL2CPP

-

Reproduction steps:
1. Open users attached project
2. Press Tools > Build App
3. Open the built project in <Project folder>/Builds/Test

Expected result: No errors in the Player
Actual result: "The referenced script on this Behaviour is missing!" errors are thrown

Reproducible with: 2021.2.19f1, 2021.3.0f1, 2022.1.0b15, 2022.2.0a9
Could not test with: 2019.4.37f1 (could not downgrade the project), 2020.3.33f1 (ArgumentException: Unhandled ManagedStrippingLevel value of 4)

Notes:
-only reproducible with IL2CPP scripting backend
-on windows, you might need to rename <Project folder>/Builds/Test to <Project folder>/Builds/Test.exe

  1. Resolution Note (2022.2.X):

    On IL2CPP builds managed code stripping is enabled - https://docs.unity3d.com/Manual/ManagedCodeStripping.html - and is removing these scripts since they are in a package and nothing in the build is referencing them. To prevent this from happening please use the BuildPlayer overload that takes a BuildPlayerOptions object and set the assetBundleManifestPath to the path to your StreamingAssets.manifest file - https://docs.unity3d.com/ScriptReference/BuildPlayerOptions-assetBundleManifestPath.html. This ensure that all of the scripts referenced in the streaming assets are found.

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