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Fixed in 1.2.5



Found in [Package]


Issue ID




int3, float3, and quaternions fields from the Mathematics package don't work properly when using [DebuggerHidden] attribute

Package: Unity Mathematics


Reproduction steps:
1. Open attached project "" and scene "SampleScene"
2. In Hierarchy window, select "Int3Object" GameObject
3. In Inspector window, modify the "Unrelated Field 1" field
4. Observe the other fields

Expected: Only the modified field changes
Actual: Both the string field, and the ‘y’ value of the int3 text field are modified

Reproducible with: 1.2.1 (2019.4.16f1, 2020.1.17f1, 2020.2.0f1, 2020.2.0a10)
Could not test with: 2018.4.30f1 (compilation errors break project)

1. The issue also reproduces with float3 and quaternion values.
2. The issue also reproduces with the two other "Unrelated Field" fields

  1. Resolution Note (fix version 1.2.5):

  2. Resolution Note (fix version 1.2.5):

    Fixed in 2019.4.33f1

  3. Resolution Note (fix version 1.2.5):

    Fixed in 2021.2.4f1

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