openapi_version=3.0.0. -> curl dow not get body at 'try it out' at 'execution'

Version 2.0.0

~~~bash
curl` -X POST "http://textors-01:5000/smanlagen" -H "accept: application/json" -H "Content-Type: application/json" -d "{ \"name\": \"string\", \"smobjekt_objid\": 0, \"smobjekt_uuid\": \"string\", \"smserver_id\": \"string\"}"
~~~

**vs.**
Version 3.0.0

~~~bash
curl -X POST "http://textors-01:5000/smanlagen" -H "accept: */*"
~~~

is this a bug of this package or some related package?

Start with the issue's OpenAPI 2.0 and 3.0 curl outputs from the Swagger UI “Try it out” execution flow, comparing the missing request body and headers. Trace where flask-apispec generates the OpenAPI 3 request example and determine whether the package or a related dependency omits them; done means the generated command includes the intended body and content type.

Written by the indexing model from the issue text.