Maybe it's supposed to be extremely acidic, and obviously there is a lot of acidic juice plus tomatoes so that is somewhat expected, but it was too much for our tastes. (epicurious.com)
I too have experienced it's failure in acidic juices, but other than that it seems to work like a charm. (sprinklebakes.com)
Plus, their sweet - acidic juices pair beautifully with mozzarella. (bonappetit.com)