How to reproduce:
1. Open the “Broken Compute shaders.zip“ project
2. Set up and connect to a Cache Server (Accelerator) in Edit > Preferences > Asset Pipeline
3. In the Project tab, in Shaders > CS folder, create a Compute Shader (or it can be created anywhere within the project)
4. Open the Compute Shader file in an IDE and inside the CSMain add ‘#include "foo.hlsl"’, then save the changes
5. Create externally a file named “foo.hlsl”
6. Select the Compute Shader file and observe the Inspector (error is still present)
7. Close the project
8. Delete the Library folder
9. Open the project and select the Compute Shader file
10. Observe the inspector

Expected result: No shader errors are present
Actual result: A shader error is present (“Couldn’t open include file ‘foo.hlsl’“)

Reproducible in: 6000.0.23f1, 6000.0.57f1, 6000.2.3f1, , 6000.3.0b1

Reproduced on: Windows 11 Pro (24H2)
Not reproduced on: No other environment tested

Workaround: Reimport the Compute Shader file

Notes:
- Locally not reproducible without Accelerator
- Reproducing this issue is incredibly inconsistent. Sometimes the issue is not reproducible in certain versions, and other times it is
- Because of these inconsistencies, the project might need to be reextracted to make the bug reproducible in certain versions, or a new project might have to be created
- And because of these inconsistencies, the bug could not be tested for regressions