AI Voice verbally spoke what appears to be an internal prompt instruction

We encountered what appears to be an AI Voice response generation issue.

During a live customer call, the caller asked to speak with a specific employee. Instead of responding normally, the AI agent said:

"uses a casual, warm tone... I can help connect you with the support team."

Initially, we thought this might have been a transcript artifact, but the agent who took the transferred call confirmed that the customer specifically mentioned the bot had actually said "uses a casual, warm tone" aloud before responding.

The transcript also reflects this:

AI agent: "uses a casual, warm tone] I can help connect you with the support team."

This appears to be an internal instruction or style prompt being spoken instead of being applied silently.

Has anyone else encountered AI Voice verbalizing what appears to be internal prompt or style instructions during a live call? If helpful, I can provide the call details privately.