Huh, same here, that “LOL” response was the exact same thing for me. Pretty weird.

When I expressed my surprise about its casual response, it switched back to the usual formal tone and apologized.

Not sure what to make of this as I don’t consider myself to be in the know when it comes to ML, but could this be training data leakage? Then again, that “LOL” sentence would be such a weird training data.