Describe the bug
I am using Semantic Kernel with Ollama and llama 3.2.

When I use the Ollama connector, the functions are not added to http request.
The same code and prompt using Azure OpenAI works correctly.

To Reproduce
OllamaFunctionCalling sample.

Expected behavior
I expect the functions being called.

Platform

• OS: Windows 11
• IDE: VS2022
• Language: C# / .NET 9
• Source: 1.28 alpha / preview

Details
I tried the same prompt on GPT and then on Ollama hosted locally.
When I use Ollama I specify the following settings:

KernelFunction[] functions = kernel.Plugins
                .SelectMany(p => p).ToArray();
FunctionChoiceBehavior functionOptions = FunctionChoiceBehavior.Required(functions, true); 

OllamaPromptExecutionSettings ollamaPromptExecutionSettings =
    new()
    {
        FunctionChoiceBehavior = functionOptions,
        ModelId = modelName,
        //...
    }

I also tried FunctionChoiceBehavior.Auto() wit no success.

I then passed my own HttpClient with a handler which logs all the http traffic. This is the result:

{"model":"llama3.2","messages":[{"role":"system","content":"","images":null,"tool_calls":null},{"role":"user","content":"What's the weather like in Genoa right now?","images":null,"tool_calls":null}],"options":{"temperature":0.85,"top_p":0.9},"stream":true,"tools":null,"CustomHeaders":{}}