Zend certified PHP/Magento developer

Magento 2 Upgrade 2.2.8 to 2.3.5 region name and city name is empty on checkout payment page for guest users

After upgrade Magento 2 (2.2.8 to 2.3.5) i am getting some errors and bugs, one of those is on checkout payment page, the region name and city name is empty for guest users, for example:

URL /checkout/

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and the result:

URL /checkout/#payment

enter image description here

for register users with the same values:

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The variables used:

/web/template/billing-address/details.html

<span data-bind="html: currentShippingAddress().region"></span>,
<span data-bind="html: currentShippingAddress().city"></span>

Response:

Guest users:

{
"addressInformation": {
    "billing_address": {
        "city": "",
        "countryId": "CO",
        "customAttributes": {
            "city_id": "362",
            "document": "1234567890",
            "document_type": "CC",
            "shipping_instructions": ""
        },
        "extensionAttributes": {
            "city_id": "362",
            "document": "1234567890",
            "document_type": "CC",
            "shipping_instructions": ""
        },
        "firstname": "Diego",
        "lastname": "Castro",
        "postcode": null,
        "region": "",
        "regionId": "563",
        "street": [
            "Cra123"
        ],
        "telephone": "3215649870"
    },
    "extension_attributes": {},
    "shipping_address": {
        "city": "",
        "countryId": "CO",
        "customAttributes": {
            "city_id": "362",
            "document": "1234567890",
            "document_type": "CC",
            "shipping_instructions": ""
        },
        "extensionAttributes": {
            "city_id": "362",
            "document": "1234567890",
            "document_type": "CC",
            "shipping_instructions": ""
        },
        "firstname": "Diego",
        "lastname": "Castro",
        "postcode": null,
        "region": "",
        "regionId": "563",
        "saveInAddressBook": null,
        "street": [
            "Cra123"
        ],
        "telephone": "3215649870"
    },
    "shipping_carrier_code": "freeshipping",
    "shipping_method_code": "freeshipping"
}

}

Register users:

{
"addressInformation": {
    "billing_address": {
        "city": "Bogotá",
        "company": null,
        "countryId": "CO",
        "customAttributes": {
            "city_id": "362",
            "document": "1234567890",
            "document_type": "CC"
        },
        "customerAddressId": "5443932",
        "customerId": "19666559",
        "extensionAttributes": {
            "city_id": "362",
            "document": "1234567890",
            "document_type": "CC"
        },
        "fax": null,
        "firstname": "Diego",
        "lastname": "Castro",
        "middlename": null,
        "postcode": null,
        "prefix": null,
        "region": "Bogotá",
        "regionCode": null,
        "regionId": "563",
        "street": [
            "Cra123"
        ],
        "suffix": null,
        "telephone": "3216548970",
        "vatId": null
    },
    "extension_attributes": {},
    "shipping_address": {
        "city": "Bogotá",
        "company": null,
        "countryId": "CO",
        "customAttributes": {
            "city_id": "362",
            "document": "1234567890",
            "document_type": "CC"
        },
        "customerAddressId": "5443932",
        "customerId": "19666559",
        "extensionAttributes": {
            "city_id": "362",
            "document": "1234567890",
            "document_type": "CC"
        },
        "fax": null,
        "firstname": "Diego",
        "lastname": "Castro",
        "middlename": null,
        "postcode": null,
        "prefix": null,
        "region": "Bogotá",
        "regionCode": null,
        "regionId": "563",
        "saveInAddressBook": null,
        "street": [
            "Cra123"
        ],
        "suffix": null,
        "telephone": "3216548970",
        "vatId": null
    },
    "shipping_carrier_code": "freeshipping",
    "shipping_method_code": "freeshipping"
}

}

Thanks.

Grettings.