Unable to get Streams using batched requests, Length always zero

Describe the bug

When using BatchRequestContentCollection (or BatchRequestContent) to request a stream content it only returns an empty stream (Length = 0). This happens regardless of whether there is a single or multiple requests in the collection.

var batchRequestContentCollection = new BatchRequestContentCollection(_graphClient);
var driveItemRequest = _graphClient.Drives[driveId].Items[driveItemId].Content.ToGetRequestInformation();
var requestId = await batchRequestContentCollection.AddBatchRequestStepAsync(driveItemRequest);
var batchResponse = await _graphClient.Batch.PostAsync(batchRequestContentCollection);
var stream = await batchResponse.GetResponseStreamByIdAsync(requestId);

I also tried to just use GetResponseByIdAsync, Header information says

Content-Type: application/octet-stream
Content-Length: 0

This does not occur when doing a single request without batching:

var stream = await _graphClient.Drives[driveId].Items[driveItemId].Content.GetAsync();

The stream gets returned correctly then.

Expected behavior

Batched requests should return stream content correctly.

How to reproduce

var batchRequestContentCollection = new BatchRequestContentCollection(_graphClient);
var driveItemRequest = _graphClient.Drives[driveId].Items[driveItemId].Content.ToGetRequestInformation();
var requestId = await batchRequestContentCollection.AddBatchRequestStepAsync(driveItemRequest);
var batchResponse = await _graphClient.Batch.PostAsync(batchRequestContentCollection);
var stream = await batchResponse.GetResponseStreamByIdAsync(requestId);

SDK Version

3.2.1

Latest version known to work for scenario above?

don't know

Configuration

• OS: Windows 11
• x64

Start with BatchRequestContentCollection.AddBatchRequestStepAsync, Batch.PostAsync, and GetResponseStreamByIdAsync using the provided drive-item content request. Compare the batched response with the direct Content.GetAsync response and inspect the returned headers and stream. Done means batched stream responses contain the requested content instead of Content-Length: 0.