Unable to get Streams using batched requests, Length always zero

[greynoO]

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

5.63.0

Latest version known to work for scenario above?

I just tried to implement this, so idk if it worked with older versions.

Configuration

• OS: Windows 11
• x64

[greynoO]

I've realised that this is probably better placed in msgraph-sdk-dotnet-core.