Deprecations not reported in the summary when running all unit tests about phpunit HOT 6 CLOSED

<?php

namespace Tests\Unit;

use DateTime;
use PHPUnit\Framework\TestCase;

class PrefillDateArrayTest extends TestCase
{
//    private array $defaultArrayItem; <---since this commented out, it will cause the deprecation

    public function setUp(): void
    {
        $this->defaultArrayItem = [];
        parent::setUp();
    }

    public function test(): void
    {
        $from = new DateTime;
        $to = new DateTime('+1 month');

        for ($date = clone $from; $date < $to; $date->modify('+1 day')) {
            $this->defaultArrayItem[$date->format('Y-m-d')] = 1;
        }
        $this->assertIsArray($this->defaultArrayItem);
    }
}

$ tree -L 2
.
├── composer.json
├── composer.lock
├── phpunit.xml
├── tests
│   └── PrefillDateArrayTest.php
└── vendor
    ├── autoload.php
    ├── bin
    ├── composer
    ├── myclabs
    ├── nikic
    ├── phar-io
    ├── phpunit
    ├── sebastian
    └── theseer

11 directories, 5 files

$ cat composer.json                           
{
    "require-dev": {
        "phpunit/phpunit": "^10.5"
    }
}

$ cat phpunit.xml
<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd"
         cacheDirectory=".phpunit.cache"
         colors="true">
    <testsuites>
        <testsuite name="default">
            <directory>tests</directory>
        </testsuite>
    </testsuites>
</phpunit>

$ ./vendor/bin/phpunit
PHPUnit 10.5.16 by Sebastian Bergmann and contributors.

Runtime:       PHP 8.3.4
Configuration: /home/sb/5793/phpunit.xml

D                                                                   1 / 1 (100%)

Time: 00:00.012, Memory: 8.00 MB

OK, but there were issues!
Tests: 1, Assertions: 1, Deprecations: 1.

$ ./vendor/bin/phpunit --display-deprecations
PHPUnit 10.5.16 by Sebastian Bergmann and contributors.

Runtime:       PHP 8.3.4
Configuration: /home/sb/5793/phpunit.xml

D                                                                   1 / 1 (100%)

Time: 00:00.008, Memory: 8.00 MB

1 test triggered 1 PHP deprecation:

1) /home/sb/5793/tests/PrefillDateArrayTest.php:14
Creation of dynamic property Tests\Unit\PrefillDateArrayTest::$defaultArrayItem is deprecated

Triggered by:

* Tests\Unit\PrefillDateArrayTest::test
  /home/sb/5793/tests/PrefillDateArrayTest.php:18

OK, but there were issues!
Tests: 1, Assertions: 1, Deprecations: 1.