Error in the directive mdbCharCounter. If an initial value was specified for the input field or the value of the field was changed outside the component, the character counter does not work correctly. The error is corrected by adding "this.onKeyUp();" to CharCounterDirective.show(). The new version of CharCounterDirective.show() version of the module looks like this:

@HostListener('focus', ['$event']) show() {
   this.onKeyUp(); // !!!
   this._renderer.setElementStyle(this.textContainer, 'display', 'block');
}

and you might need to change the listened  event to track the changes in the field value that you made through the pop-up menu and cut? paste and delete commends.

@HostListener('input', ['$event']) onKeyUp() { ...

Sincerely yours,
Nick.