Given an http service client and a group configuration in the application.yml that includes an API Version, the version is no longer sent by the client after upgrading to Spring Boot 4.0.4. The previous version works as expected.

spring:
  http:
    clients:
      connect-timeout: 3s
      read-timeout: 10s
      redirects: dont-follow
      imperative:
        factory: http-components
    serviceclient:
      todo:
        base-url: http://todo/api
        apiversion:
          default: 1.0
          insert:
            header: X-Version

A minimal example reproducing the issue can be found here (branch http-service-client-4.0.4) :
The test succeeds with Spring Boot 4.0.3, but fails with 4.0.4