response from GET request is truncated (RAK8211)

I forgot to mention that I had tried that one too.
Unfortunately I got the same result:

function getHttp(options, callback) {

  http.get(options, function(res) {
    print("available: " + res.available()); //returns 168
    print("Content-Length: " + res.headers['Content-Length']);  //returns 300
    var content = "";

    res.on('data', (data) => content+=data);
    res.on('close', (data) => print("close: " + content))
    res.on('error', (e) => print("Error: " + e));

  }).on('error', function(e) {
    print("ERROR", e);
  });
}

Results:

available: 168
Content-Length : 300
close: [{"type":"Positioning","accelerometer":true,"trilateration":true,"globalPositioning":true},{"type":"EventCadence","smartMode":true},{"type":"Environmental","humidity":t

I only added the "manual read" after it failed the first time, just to see if I could force it to read all 300 characters, which didnt work either because theres only 168 bytes available.