Combination of phpdbg and Generator method causes memory leak

Description

Run phpdbg on object has generator method causes memory leaks.
It does not occur when run with php command.

The following code:

<?php
class A
{
    private $s;

    public function __construct()
    {
        $this->s = str_repeat('a', 1000000);
    }

    public function iterate()
    {
        yield 1;
    }
}

for ($i=0; $i<1000000; $i++) {
    $arr = iterator_to_array((new A())->iterate());
}

var_dump('ok', memory_get_peak_usage(true));

Resulted in this output:

$ phpdbg -qrr zz.php
[PHP Fatal error:  Allowed memory size of 134217728 bytes exhausted (tried to allocate 1003520 bytes) in /w/zz.php on line 8]

But I expected this output instead:

$ php zz.php
string(2) "ok"
int(2097152)

PHP Version

PHP 8.3.0

Operating System

Debian 12