Agents not using system messages

[pkrauss-prot]

package version: github.com/tmc/langchaingo v0.1.12

Using the below code, which is using an Azure OpenAI LLM, ignores the system message or the extra messages.

agent := agents.NewConversationalAgent(llm,
	agentTools,
	agents.WithMaxIterations(3),
	agents.NewOpenAIOption().WithSystemMessage("talk like a pirate"),
	agents.NewOpenAIOption().WithExtraMessages([]prompts.MessageFormatter{
		prompts.NewHumanMessagePromptTemplate("please talk like a pirate", nil),
	}),
)
executor := agents.NewExecutor(agent)

question := "what is the answer for 1000092 / 23999 * 1000000? break it down into steps"
answer, err := chains.Run(context.Background(), executor, question)

No matter the personas i try to instill they are ignored.