bug(mat-form-field): Custom input validation message not showing with mat-stepper

[Arti3DPlayer]

Description

I implemented custom control based on official guides using ControlValueAccessor:

• https://material.angular.io/guide/creating-a-custom-form-field-control
• https://blog.angular-university.io/angular-custom-form-controls/

The issue that validation error is not showing until we touch our custom field. In my case I have an issue with Stepper, but it also not working when I do this.form.markAllAsTouched()

Reproduction

I provided example below based on official custom Phone field.

• Click "Next" with empty fields.

Example on stackblitz

Expected Behavior

Errors must be shown as for default mat-input in both cases for: mat-stepper and this.form.markAllAsTouched()

Actual Behavior

Error is not shown for custom Tel field

Environment

• Angular: 13+
• CDK/Material: 13+
• Browser(s): Any
• Operating System (e.g. Windows, macOS, Ubuntu): Any

[Arti3DPlayer]

This also happens on Angular 14