Hi,
to cancel a input field, the user has to press "esc" key, else if the user click somewhere else, it's treated as a submit, this is by design inside uGui.
if you want to prevent this, you should simply check if the enter key is down when submittion occur.
else, check out the sample uGuiLoginForm, it has a check routin for enter key on a field to login on user enter key instead of pressing a button, that could give you some ideas.
Let me know if that creates problem for you.
Bye,
Jean