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Fixed in 2022.2.X



Found in





Issue ID




NullReferenceException is thrown in Play mode when GO Properties window is open and the GO has certain Canvas Components

Inspector Framework


Reproduction steps:
1. Open the attached project ("")
2. Open "SampleScene"
3. Right-click Canvas in the Hierarchy window and select "Properties..."
4. Enter Play mode

Expected result: There are no errors in the Console window
Actual result: NullReferenceException is thrown:
NullReferenceException: Object reference not set to an instance of an object
UnityEditor.PropertyEditor.DrawEditors (UnityEditor.Editor[] editors) (at /Users/bokken/buildslave/unity/build/Editor/Mono/Inspector/PropertyEditor.cs:1722)
UnityEditor.PropertyEditor.RebuildContentsContainers () (at /Users/bokken/buildslave/unity/build/Editor/Mono/Inspector/PropertyEditor.cs:916)
UnityEditor.InspectorWindow.RedrawFromNative () (at /Users/bokken/buildslave/unity/build/Editor/Mono/Inspector/InspectorWindow.cs:175)

Reproducible with: 2020.3.23f1, 2021.2.4f1, 2022.1.0a16
Couldn't reproduce with: 2019.4.33f1 (no Properties window)

1. In 2020.3.23f1 and 2021.2.4f1, the same GameObject or the Parent Canvas also needs to be selected in the Hierarchy window
2. In 2020.3.23f1 and 2021.2.4f1, the issue is not reproducible with Canvas, only GameObjects that have Canvas Renderer and a Component that depends on it
3. In 2022.1.0a16, the issue is reproducible with GameObjects that have a Canvas Renderer or a Canvas Component

  1. Resolution Note (fix version 2022.2):

    Fixed in: 2022.2.0a3

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