.NET: ChatClientAgent returns first line only

Hi all,
I've installed Ollama on my local Windows machine and tried to create a simple agent using the following code.

```csharp
using Microsoft.Extensions.AI;
using OpenAI;
using OpenAI.Chat;
using System.ClientModel;

var openAIClient = new ChatClient(
model: "gemma3:270m",
credential: new ApiKeyCredential("your_api_key"),
options: new OpenAIClientOptions()
{
Endpoint = new Uri("http://localhost:11434/v1/")
}
);

var agent = openAIClient.CreateAIAgent("You are good at telling jokes", "joker");

try
{
var prompt = "Tell me a joke about a pirate.";
Console.WriteLine(await agent.RunAsync(prompt));
}
catch (Exception ex)
{
Console.WriteLine($"Error: {ex.Message}");
}

Console.ReadLine();
```

Project file

```xml

Exe
net10.0
enable
enable

```

However, the RunAsync or RunStreamingAsync function only returns the first line of the response.

I'm not sure if I misconfigured something, but when I tested directly with Ollama or HttpClient, I received the complete answer.

I'm unsure what the issue could be. Any help would be appreciated.