设置BlobHttpHeaders导致PNG图片上传后损坏？

我正在使用Docker运行的Azurite向本地Blob存储上传PNG图片，本地文件大小为167.08 KiB：

• 不设置请求头上传时，Blob大小与本地一致，但Content Type被设为application/octet-stream，图片无法正常展示
• 设置ContentType为image/png后，Blob大小变为167.06 KiB，文件损坏无法被图片编辑器打开

设置ContentType后文件损坏的代码（Blob大小167.06 KiB） #

public async Task<Uri> Upload(string container, string destination, MemoryStream stream)
{
  stream.Position = 0;
  var blob = this.Blob(container, destination);

  var headers = new BlobHttpHeaders() { ContentType = "image/png" };
  var uploadOptions = new BlobUploadOptions() { HttpHeaders = headers };

  await blob.UploadAsync(stream, uploadOptions);
  return blob.Uri;
}

Content Type不正确但文件正常的代码（Blob大小167.08 KiB） #

public async Task<Uri> Upload(string container, string destination, MemoryStream stream)
{
  stream.Position = 0;
  var blob = this.Blob(container, destination);
  await blob.UploadAsync(stream);
  return blob.Uri;
}

内容的提问来源于stack exchange，提问作者Santi