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Won't Fix



Found in [Package]





Issue ID




"NullReferenceException" error when copying a Blackboard category from one Shader Graph to another

Package: Shader Graph


Reproduction steps:
1. Open the attached "" project
2. In the "New Shader Graph" tab, copy one of the categories in the Blackboard
3. In the "New Shader Graph 1" tab, paste the copied category to the Blackboard
4. Observe the Console logs

Expected result: No error appears and the category is pasted into the Blackboard of the "New Shader Graph 1"
Actual result: "NullReferenceException: Object reference not set to an instance of an object" error appears and the category is not pasted into the Blackboard of the "New Shader Graph 1"

Reproduced with: 12.1.11 (2021.3.26f1), 14.0.7 (2022.2.21f1), 15.0.5 (2023.1.0b19), 16.0.1 (2023.2.0a17)
Could not test with: 10.10.1 (2020.3.48f1) - categories in the Blackboard are not available yet in this version

Reproduced on: Windows 10

  1. Resolution Note:

    I'm unable to reproduce this as of latest on each of our tech releases. I suspect this NRE was the result of a refactor of some of our UI systems that resulted in a few issues they later addressed.

    If this issue persists, please reopen!

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