.NET: [Bug]: why does MAF add empty content for assistant message : [ { "type": "text", "text": "" }, // ← empty first element { "type": "text", "text": "previous assistant response" } // ← actual response ]?

[hafeezniyaz]

Description

The framework adds an empty content message along with the actual response into the content array of the [
{ "type": "text", "text": "" }, // ← empty first element
{ "type": "text", "text": "previous assistant response" } // ← actual response
]?

Due to this, I believe the chat template parser malfunctions and forces the model to respond to my previous and current message together

I observed this behaviour in GPTOSS 120B on VLLM

Code Sample

Error Messages / Stack Traces

Package Versions

1.5.0

.NET Version

No response

Additional Context

No response

[moonbox3]

@hafeezniyaz can you please provide some minimal sample code so we can reproduce it?