Validation errors for richTextFields are shown as soon as the dialog is opened.

Attempting to find a workaround for MGNLUI-6112 I added a validator to a richTextField. As soon as the dialog is opened, the error message is shown without giving the user a chance to enter anything.

Example:

    test: 
      $type: richTextField
      validators: 
        mandatory: 
          $type: regexpValidator
          pattern: ".+"
          errorMessage: This field is required

This is also true using emailValidator.

When a value is entered, it has no effect: the error message remains and the form cannot be submitted. The same regex, .+, works as expected to validate any character has been entered in a textField.