How to reproduce:
1. Open the attached “IN-131723.zip” project
2. Open the “SampleScene”
3. Open the “flask test” ShaderGraph and dock it next to the Scene View
4. Make any changes in the ShaderGraph
5. Rapidly mash CTRL + S to save the ShaderGraph
6. Observe the crash

Reproducible in: 6000.0.66f1, 6000.3.6f1, 6000.4.0a1
Not reproducible in: 6000.4.0a2, 6000.4.0b5, 6000.5.0a5

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Notes:
- ”Failed to write shader cache entry to Library/ShaderCache/” or “Assertion failed on expression: 'm_AdjustedVariantDataCreated'“ errors may appear in the Console Window prior to crashing
- Also reproducible with VFXGraph instead of ShaderGraph
- It may take a around a minute or two of mashing CTRL + S before the crash happens

First few lines of stacktrace:

0x00007FFC2DD35140 (Unity) UNITY_XXH32
0x00007FFC2DBFE49E (Unity) ReadFromShaderCache
0x00007FFC2DBF9155 (Unity) GetSerializedSubProgramForShaderSnippet

OR

0x00007FF859B2571E (Unity) EnumerateDisabledKeywordsInVariantsArray
0x00007FF859B23A89 (Unity) CompileShaderSnippet
0x00007FF859B2660B (Unity) GetSerializedSubProgramForShaderSnippet
0x00007FF85A178B02 (Unity) CompileSingleVariantJob