Angular 9 --disableHostCheck flag has no effect when --host is passed (or --configuration) #20951

$ npm run start -- --host 0.0.0.0 

> angular-nine-template@0.0.0 start /home/rkrisztian/tmp/angular-nine-template
> ng serve "--host" "0.0.0.0"

WARNING: This is a simple server for use in testing or debugging Angular applications
locally. It hasn't been reviewed for security issues.

Binding this server to an open connection can result in compromising your application or
computer. Using a different host than the one passed to the "--host" flag might result in
websocket connection issues. You might need to use "--disableHostCheck" if that's the
case.
(...)

$ npm run start -- --host 0.0.0.0 --disableHostCheck true 

> angular-nine-template@0.0.0 start /home/rkrisztian/tmp/angular-nine-template
> ng serve "--host" "0.0.0.0" "--disableHostCheck" "true"

WARNING: This is a simple server for use in testing or debugging Angular applications
locally. It hasn't been reviewed for security issues.

Binding this server to an open connection can result in compromising your application or
computer. Using a different host than the one passed to the "--host" flag might result in
websocket connection issues. You might need to use "--disableHostCheck" if that's the
case.
WARNING: Running a server with --disable-host-check is a security risk. See https://medium.com/webpack/webpack-dev-server-middleware-security-issues-1489d950874a for more information.
(...)