OpenApi Json schema is incorrect in Dotnet version 9.0.4

[itroncolinis]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

Even if Dotnet version 9.0.4 is supposed to fix #60339, a minimal model in the repro project emits wrong Json shema

Expected Behavior

In the repro project, I expect the correct Json schema to be created at https://localhost:7295/openapi/v1.json

but the wrong schema is created:

If you uncomment the code in Program.cs lines 11-14, a schema transformer is applied and the correct schema is generated.

Steps To Reproduce

Clone repro solution at

https://github.com/itroncolinis/openapibug

Launch the application and verify the json schema at https://localhost:7295/openapi/v1.json

Exceptions (if any)

No response

.NET Version

9.0.203

Anything else?

My IDE is Visual Studio 2022 (Version 17.13.6)

dotnet--info-output.txt

[captainsafia]

It looks like this is still an issue with the updated ref support in .NET 10. Need to sort out what is happening with the mapping from the relative references that STJ produces to the absolute references that we need.

[captainsafia]

Actually I'll close this in favor of #61194 which is the same issue with more reports.