If the change is unconfirmed, then it isn't part of your balance and you will be unable to send that change. It depends on how many inputs of your balance are change. Can you show a screenshot?
Okay, if this is not part of my balance, why I see that I have available balance on listaccounts ?
How then I can trust what listaccounts shows, or how to see actually avail amount on my account, when
spendzeroconfchange is unset.
P.S. did not get what screenshot do you want..