RxCache returning only first value of an Observable stream

[apexkid]

I was able to make RxCache with retrofit work by creating a provider which matches the return type of the retrofit api interface. However, if i first transform the API output to another Observable and try to cache on it, the cache only returns the first object in the stream.

I have a function in my repository like this:

 public Observable<FeaturedUserRecord> getFeaturedUsersFromService(boolean forceAPIReload) {
        Log.v(TAG, "Trying to getFeaturedUsersFromService");

        final Observable<FeaturedUsersResponse> output = apiService.getFeaturedUsers();
        final Observable<FeaturedUserRecord> result = output.flatMapIterable(listRest -> listRest.getData())
                .map(apiEntity -> transformer.transform(apiEntity));

        return result;
    }

I want to cache on the return value of the function instead on the return value of the apiService. Therefore, i created a provider like:

    @ProviderKey("featured-users-cached2")
    @LifeCache(duration = 5, timeUnit = TimeUnit.MINUTES)
    Observable<FeaturedUserRecord> getFeaturedUsersCached2(
            Observable<FeaturedUserRecord> functionOutput, EvictProvider evictProvider
    );

The first time data is loaded, it sends all the records received from the api. However, the cache only returns the first value of the observable stream on subsequent refreshes.

[apexkid]

Is it the case here that RxCache can cache Observable<List<MyObj>> but it cannot work with Observable<MyObj>?