Paper trading: ISRG did a stock split but I don't see it

Stock symbol ISRG did a 3 to 1 stocks split back in October. I have the stock in my paper account and instead of getting additional shares at the new lower price per share, I show a loss of, like 600 per share. It appears the stock split has not been recognized. Is this because it’s a paper account and not a real one or am I seeing a bug? Or am I wrong about the whole thing?