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By Design
Votes
1
Found in
2020.1
2020.2.0b13
2021.1
Issue ID
1296869
Regression
No
UnityWebRequest fails when Managed Stripping Level is enabled
Reproduction steps:
1. Open attached project "TestDownload.zip" and scene "TestUnityWebRequest"
2. In Editor menu, select Tools -> Build Game
3. After the build is complete, open "Test" application in the project's "Player" folder
4. In Player, click on "Test 3" Button
5. In Player, observe console window
6. In Editor menu, set Edit -> Project Settings -> Player -> Other Settings -> Managed Stripping Level to "Medium"
7. Repeat steps 2-5
Expected result: "87730 Success"
Actual result: "0 Success"
Reproducible with: 2020.1.17f1, 2020.2.0f1, 2021.1.0a9
Could not test with: 2018.4.30f1, 2019.4.16f1 (console errors break project)
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Resolution Note:
This happens because using higher stripping settings some overridden method get stripped.
Adding this attribute to overrides helps:
https://docs.unity3d.com/ScriptReference/Scripting.PreserveAttribute.html