QFuture then continuation never finishes

pusheax

Hello, I have a question about QFuture and their continuation then API. Consider the following example code:

auto future = getAccountToken("test@mailprovider.com", "password")
        .then([this](QFuture<QString> f) {
            auto const token = f.result();
            return getGameAccounts(token);
        })
        .then([this](QFuture<QList<GameAccount>> f) {
            auto const gameAccounts = f.result();
            // --> LINE NEVER REACHED (WAITS FOREVER ON f.result() CALL)
        });

And:

QFuture<QString> getAccountToken(/*...*/)
{
    QPromise<QString> promise;
    auto future = promise.future();

    promise.start();

    QNetworkRequest request(QUrl("https://example.org"));
    // ...
    auto reply = networkMngr->post(request, doc.toJson());
    connect(reply, &QNetworkReply::finished, [reply, p = std::move(promise)]() mutable {
        p.addResult("<TOKEN FROM REPLY>");
        p.finish();

        reply->deleteLater();
    });

    return future;
}

The function getGameAccounts has the same boilerplate code as getAccountToken, except that it performs a GET request instead.
Does anyone know why I never reach the line after auto const gameAccounts = f.result(); ? A single .then continuation works fine.
FYI: I don't reach the connect lambda for the reply in getGameAccounts either, which explains why I never have any result. But I can't seem to figure out why that happens.

Thank you in advance.