ControlValueAccessor does not emit change to parent component form group

[dim kettle]

https://stackblitz.com/edit/angular-ivy-ykb4oa
In the abve example I would expect, that if user changes value of the search input, it is reflected in form value, but it's not. What is wrong with this code?

[fallen cypress]

Your CVA never calls the onChange callback function it's supposed to call whenever its value changes. So the form is never informed of any change.