On another T-ride forum - many are reporting the issue. One said they were told by a dealer that it is caused by the check valve in the line being too far upstream from the nozzle - so what leaks out is the fluid in the line from the check valve to the nozzle after you stop spraying. Also being told the current check value cannot be moved closer to the nozzle due to its size. Kia has been made aware, unclear if they are doing anything about it.
Can't hurt to call Kia Customer Assistance and report it...
Also some that previously reported the problem said it stopped by itself after a period of time... maybe something has to work its way in...?
FWIW