deserialize httpclient's content result yields intermittend null values - json

Question

I have a async method in a pcl:
public async Task<T> Get<T>(string method) where T : EntityBase
{
try
{
Log.Info($"RequestURL {_client.BaseAddress}{method}");
var response = await _client.GetAsync(method);
var content = await response.Content.ReadAsStringAsync();
if (response.StatusCode != HttpStatusCode.OK)
{
return HandleResponse<T>(response); //this method just handles failures and logs the info in aspecial way
}
Log.Info($"Response {content}");
return JsonConvert.DeserializeObject<T>(content);
}
catch (Exception ex)
{
Log.Error($"Making api request to {method}. --- {ex.ToString()}");
return default(T);
}
}
my handleresponse method:
private T HandleResponse<T>(HttpResponseMessage responseMessage) where T : EntityBase
{
var resultType = RequestResultType.Success;
var message = "OK";
switch (responseMessage.StatusCode)
{
case HttpStatusCode.Unauthorized:
resultType = RequestResultType.Failure;
message = "Unauthorised";
break;
}
Log.Info($"StatusCode: {responseMessage.StatusCode}");
Log.Info($"ResultType: {resultType}");
Log.Info($"Message: {message}");
return (T)Activator.CreateInstance(typeof(T), resultType, message);
}
The object represented in T above:
public class TaskItemList: EntitBase
{
public List<TaskItem> Tasks { get; set; }
}
The problem I have, is that this same method, when called, randomly returns T as null. Sometimes T is partially populated, with some of the properties being null
When i call the API via the browser, there is always a value.
I suspect that the response content is not yet completely formed by the time json is trying to deserialize it, but how does one handle this?