Run the following script:

<?php

class Example
{
    private int $prop;

    public function getProp(): int 
    {   
        return $this->prop;
    }   
}

$refClass = new ReflectionClass(Example::class);

$object = $refClass->newLazyGhost(function ($object) {
    echo "Initializer called\n";
    $ref = new ReflectionObject($object);
    $p = $ref->getProperty('prop');
    $p->setValue($object, 1); 
});

function foo(object $object)
{
    try {
        throw new Exception();
    } catch (Exception $e) {
    }   
}

echo __FILE__, ':', __LINE__, "\n";
foo($object);

echo __FILE__, ':', __LINE__, "\n";
$object->getProp();

echo __FILE__, ':', __LINE__, "\n";
print_r((array) $object); // When Xdebug is loaded, the array is empty.

echo __FILE__, ':', __LINE__, "\n";

This should not output an empty array in the last var_dump.