Yeah, bit poor isn't it. How can someone design a good delay that doesn't do this…??? 
I have given up. Hopefully they'll add a proper fix.
I did consider the external bypass to 'bypass' etc but whats the point of that when I am switchin gear, the whole point being one foot step and a change of sound.
But I don't get their 'Spill' setting, as it doesn't actually spill the delay over.
Eventide, go and find the gigging guitarist in your design team and get him involved.