In order to make as realistic a sound as possible, we've had to sacrifice a bit of expressivity in Flute Phi. This means that certain playing techniques such as staccato are restricted on that sound because of the difficulty of adapting the algorithms. We prioritised the realism over the expressivity.
In order to get a sound that will work better for these playing techniques, you can try out sound number 8 Chalumeau or maybe number 2 Daphnis Flute? Let me know how you get on with those!
We will of course do our best to improve this in the future and will let you know how this progresses.