Laravel Eloquent problem

no-identity-map.php

<?php
    public function testIdentityMap()
    {
        Comment::query()->where(['id' => 1])->update(['content' => 'a']); // set default value for the first comment

        $user = User::query()->find(1);
        $user->name = 'David '.date('s');
        $user->save();

        $user2 = User::query()->find(1);
        dump($user2->name === $user->name); // true

        $firstComment = Comment::query()->find(1);

        foreach ($user->comments as $c) {
            if ($c->id === 1) {
                dump($c === $firstComment); // false
                $c->content = 'aaa';
                $c->save();
                dump($c->content); // "aaa"
                dump($firstComment->content); // "a" .. wrong value

                $firstComment->refresh(); // fix it
                dump($firstComment->content); // "aaa"
                dump($firstComment->content === $c->content); // finally true!
            }
        }
    }