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Fixed in 2020.3.X



Found in



Issue ID




[Texture] Null Referrence Exceptions when Packing a Sprite Atlas with size smaller than the smallest Sprite



Reproduction steps:
1. Open the attached project
2. In the Project window select the Sprite Atlas
3. In inspector switch the Max Texture Size to less than 1024
4. Pack Preview

Expected result: an error is thrown in console that indicates that the Sprite atlas needs to be at least 1024
Actual result: along with the size error, many MissingReferrenceException errors are thrown

Reproducible with: 2020.3.33f1
Not reproducible with: 2019.4.37f1, 2021.2.19f1, 2022.1.0b15, 2022.2.0a9

Tested on Windows 10

1. Full error can be found in the report
2. The issue stops reproducing after a downgrade or an upgrade of the project and I was not able to reproduce the issue again by creating a new project. The project attached has the issue in it

  1. Resolution Note (fix version 2020.3):

    Fix for this issue is available on Unity 2020.3.35f1 and above

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