The data in jquery-ui.autocomplete comes, but the list is not displayed, no one has encountered such a problem?

Question

C++ / C#

I'm trying to use autocomplete like this:

$myCtrl.autocomplete({
    source: function (request, response) {
        var term = request.term;
        $.ajax({
            url: '[% Env("Baselink") %]Action=RS_Diagnosis&Subaction=GetCustomerUser&[% Env("SessionName") | html %]=[% Env("SessionID") | html %]&term=' + term,
            type: "get",
            dataType: "json",
            success: function (data) {
                response(data);
            },
        });
    },
    minLength: 2,
    delay: 600,
});

Data from an external source comes, I can display it with an alert, or to the console, but the list with options is not presented.
A slightly preformatted server response:

[
    {"id":"first","value":"first","label":"First <[email protected]>"},
    {"id":"olga","value":"olga","label":"Olga <[email protected]>"},
    {"id":"zanak","value":"zanak","label":"Zanak <[email protected]>"}
]

The content-type in application/json is exposed by the server.

The whole brain is broken, what can be. Help, if anyone stepped on this rake and knows the method of treatment.

Answer 1

This is the initialization of the class fields.
If you wrote in Java style - like this ( we'll QObjectskip it for now):

Get::Get(const QString &peer, const QString &objectId, QObject *parent) :
    QObject(parent)
{    
    this->peer = peer;
    this->objectId = objectId;
    this->socket = new QUdpSocket(this);
    ...

then the members ( peer, objectId, socket) would first be created with their default constructors and then assigned to them . That is, these are 2 actions, instead of one - calling the correct constructor immediately ( initialization ).
As for QObject, it is the parent class for the type Get, so you also need to call the constructor on itQObject(QObject *parent)

Answer 2

1. select one field, let's say label
2. json_decode

Answer 3

Question removed.
The explicit indication of z-index for the control, to which the autocompleter is attached, helped. Under the penguin, everything worked without it, but under M $ it didn’t work. It is a pity that I did not see this in a pile of layers earlier.
Thank you all for your attention.