undocumented api changes or bug when accessing createAuthorIfNotExistsFor via POST

[Loki-Afro]

Describe the bug
using api version 1.2.14 the POST method variants of for example createAuthorIfNotExistsFor do not work anymore because they time out

Expected behavior
API in version 1.2.14 works the same as before, or document some breaking API changes

Server (please complete the following information):
containerized in version 2.5.0

• Is the server free of plugins: yes

Additional context
the issue appears to be present in 2.4.2

although 1.2.14 is fairly old, i think it is still supported since
when running via podman

podman run --net=host -p 9001:9001 --rm docker.io/etherpad/etherpad:2.5.0
wget http://localhost:9001/api/1.2.14/openapi.json

You can still get the api definition, combined with https://docs.etherpad.org/api/http_api.html#openapi i assume this is supported

it definitely worked in 2.3.2.

You may also take a look here to see the necessary changes I had to do: https://github.com/hpi-schul-cloud/schulcloud-server/pull/5870/files

[SamTV12345]

This works http://localhost:9001/api/1.3.0/createAuthorIfNotExistsFor

[Loki-Afro]

@SamTV12345 whats baseUrl in your screenshot?
i also noted that the apiKey was given as body as well as the rest of the payload when sending the data via post, maybe that changed?

weird indeed

[SamTV12345]

Normally it should not be an issue how you send the request.