Back End - AI summary often appears in a foreign language

Any idea why this is happening?

All access is from UK IP addresses and the user is speaking in English. The repsonse from the Pickaxe is also in english but the summary can be in French and sometimes Spanish!

That should not happen. The prompt scaffolding powering the AI summary system is written completely in english. If the end-user conversation is all in a foreign language, then the summary will adopt that language. Are you sure there are no users having conversations in french or spanish?

Positive. It was me! 12:16 it summarised in English then at 12:20 summarised in French (only the AI summary in the backend - the actual front ne response was spot on).

This is still happening.