How to log HTTP requests made by Quarkus GraphQL Client?

I’m running into serious problems trying to get Quarkus to show the HTTP requests being made by the typesafe GraphQL client.

The project contains an interface GraphQL client definition com.example.MyApi and I have tried the following configurations in application.properties without success:

quarkus.log.category."io.smallrye.graphql".level=FINEST
quarkus.log.category."io.vertx".min-level=TRACE
quarkus.log.category."com.example.MyApi".level=FINEST

When that failed, I downloaded Requestly and subsequently mitmproxy in order to capture requests in the proxy, but it appears that http.proxyHost, http.proxyPort, https.proxyHost and https.proxyPort are all ignored by Quarkus somehow.

Has anybody gotten either logging of the actual HTTP requests generated by the typesafe GraphQL client to work or proxying of the outgoing requests so they can be viewed by another tool?