RSRP-469330: Generate deconstructor option is disabled for child class when properties and fields are located in parent.

JetBrains ReSharper Ultimate 2018.1 12.0.20180418.213521-eap10d.

PersonBase

    public class PersonBase
    {
        public string Name;
        public int Phone;
        public string BirthDate;
        public string LName { get; set; }
        public string MiddleName;
        public string LastMiddleName;
    }

Person

    public class Person: PersonBase
    {
        public Person(string name1, int phone, string birthDate)
        {
            Name = name1;
            Phone = phone;
            BirthDate = birthDate;
        }
    }

1. Invoke Generate Code.
2. Inspect dropdown.

Actual result:
Deconstructor option is disabled.

Expected result:
Deconstructor option is enabled.