Add validation to VNC password in new UI
VMs -> existing VM -> options (3dot) -> Devices -> VNC -> Options (3dots) -> Edit
VMs -> existing VM -> options (3dot) -> Devices -> Add Device -> VNC (VNC cannot already be added)
VNC Password tooltip says the password cannot be longer than 8 characters. There is currently no enforced field length.
Add a validator to allow a max of 8 characters.
VNC-PasswordValidation-2018-08-02.png shows an entry with 10 characters
(It's not clear if there are other restrictions)