ChatGPT does NOT echo back mcp-session-id anymore - violating MCP transport rules

Hi Casey,

Thanks for the quick response.

We noticed yesterday, while adapting our MCP server logic to this update that on ChatGPT iOS and ChatGPT Mac OS the tool calls still do not echo back the MCP-Session-Id, but the ChatGPT web application is echoing it back again , this conflicts with what you say in your reply.

Could you clarify why we are seeing MCP-Session-Id in the requests again for "jsonRpcMethods": [ "tools/call" ], - type of requests ?