Temporal UI enable Open API not working

I checked the documentations:

That says that setting TEMPORAL_OPENAPI_ENABLED should enable the documentation of OpenAPI to for example localhost:8080/openapi/. But for me is not working. I’m missing something besides settings this flag and enabling the UI?

Thanks,

Believe it was moved out of ui to api repo here

For my information, is there any way to enable the discovery endpoint?
GET http://localhost:7243/openapi

Default http port for frontend service is 7243, yes.

Openapi and Swagger is available via

http://<host>:7243/openapi.yaml

http://<host>:7243/swagger.json
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