FreeBSD 12 - Unable to see FDE passphrase prompt

[manas]

On a FreeBSD 12-RELEASE install with the following in my /boot/loader.conf :

boot_multicons="YES"
boot_serial="YES"
console="comconsole,vidconsole"
comconsole_speed="115200"

I am unable to see the prompt for entering the FDE passphrase while connected to the serial console from a different system.
I am able to use the console after I enter the passphrase on a keyboard connected to the system.
Is there a way to configure the serial console to display the FDE passphrase prompt and accept input over the serial console?

 

[T-Daemon]

You want to read this: Handbook, 26.6. Setting Up the Serial Console , boot.config(5) , boot(8) ,