RESTEasy ignores @ConstrainedTo in some situations

This issue was reported by a user on the jsr371-users mailing lists:

https://groups.google.com/forum/#!topic/jsr371-users/IPqLa6Kz1Q8

I was able to verify this issue with Wildfly 12.

Imagine the following Feature:

@Provider
@ConstrainedTo(RuntimeType.SERVER)
public class SomeFeature implements Feature {

    @Override
    public boolean configure(FeatureContext context) {
        // DO STUFF
    }

}

If this feature is registered via a META-INF/services/javax.ws.rs.ext.Providers file, RESTEasy seems to pick the feature up even when bootstrapping the client API and is therefore ignoring the @ConstrainedTo annotation.