Why is the element duplicated when reading a multiple property?

Question

1C-Bitrix

There is a multiple property of type "Binding to sections". When reading elements using "CIBlockElement::getList()" if the property contains multiple values, the element is duplicated:

while ($item = $result->fetch())
    $elements[] = $item;

Weird, this is the first time I've noticed this. Is there any standard setting that allows you to group property values ​​in one element, like in $arResult of the same news.list, for example? Something like that:

item = [
    'PROPERTIES' = [
        'PROP' => [
            'VALUE' = [23, 64, 41]
        ]
    ]
]

Answer 1

If I remember correctly, then you need to change the storage location of the properties, transfer them to a separate table. Then there will be no problem with multiple properties.