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[Android] AssetBundles fail to build correctly which results in an empty Scene

Asset Bundles


How to reproduce:
1. Open the attached project ""
2. Load the Scene "Startup"
3. Make sure that the build platform is set to Android (File > Build Settings...)
4. In the Project view find and delete the contents of the AssetBundles folder (Assets > StreamingAssets > AssetBundles)
5. Build the AssetBundles (Build > Build AssetBundles)
6. Build and run the project to an Android device

Expected result: The assets get built correctly and the Scene "Startup" loads on the device without any issues displaying a moving character
Actual result: The assets do not get build correctly, the device screen is blank when the Scene "Startup" loads

Reproducible with: 2019.4.16f1, 2020.1.17f1, 2020.2.0f1, 2021.1.0a9
Could not test with: 2018.4.30f1 (multiple Console errors after downgrading)

Reproducible on:
VLNQA00052, Xiaomi MI MAX, Android 7.0, CPU: Snapdragon 617 MSM8952, GPU: Adreno (TM) 510
VLNQA00288, Samsung Galaxy J7, Android 8.1.0, CPU: Exynos 7 Octa 7870, GPU: Mali-T830
VLNQA00332, Samsung Galaxy XCover4, Android 9, CPU: Exynos 7 Quad 7570, GPU: Mali-T720

- Builds correctly on StandaloneWindows platform
- Builds correctly on Android when using the additional Asset Bundle Browser package
- The AssetBundle build code can be found in "TestMain.cs"
- Will also fail to correctly build on Android when using CompatibilityBuildPipeline
- A workaround is to open the Timeline "ApholeAppearTimeline" before building the assets (this only works when using BuildPipeline and will not work on CompatibilityBuildPipeline)

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