Phpunit: Passing Exception instance via DataProvider throws ReflectionException

| Q | A
| --------------------| ---------------
| PHPUnit version | 9.2.5
| PHP version | PHP 7.4.7 (cli) (built: Jun 11 2020 18:33:07) ( NTS )
| Installation Method | Composer

Summary

When passing an Exception instance via a dataProvider, an Uncaught ReflectionException is thrown:

Current behavior

Fatal error: Uncaught Exception: Serialization of 'ReflectionClass' is not allowed in /var/www/html/vendor/phpunit/phpunit/src/Framework/TestCase.php:723
Stack trace:
#0 /var/www/html/vendor/phpunit/phpunit/src/Framework/TestCase.php(723): serialize(Array)
#1 /var/www/html/vendor/phpunit/phpunit/src/Framework/TestSuite.php(638): PHPUnit\Framework\TestCase->run(Object(PHPUnit\Framework\TestResult))
#2 /var/www/html/vendor/phpunit/phpunit/src/Framework/TestSuite.php(638): PHPUnit\Framework\TestSuite->run(Object(PHPUnit\Framework\TestResult))
#3 /var/www/html/vendor/phpunit/phpunit/src/Framework/TestSuite.php(638): PHPUnit\Framework\TestSuite->run(Object(PHPUnit\Framework\TestResult))
#4 /var/www/html/vendor/phpunit/phpunit/src/Framework/TestSuite.php(638): PHPUnit\Framework\TestSuite->run(Object(PHPUnit\Framework\TestResult))
#5 /var/www/html/vendor/phpunit/phpunit/src/TextUI/TestRunner.php(657): PHPUnit\Framework\TestSuite->run(Object(PHPUnit\Framework\TestResult))
#6 /var/www/html/vendor/phpunit/phpunit/src/TextUI/Command in /var/www/html/vendor/phpunit/phpunit/src/Framework/TestCase.php on line 723

How to reproduce

processIsolation="true"

class MyTest extends \PHPUnit\Framework\TestCase
{
    /**
     * @dataProvider thisMethodDataProvider
     */
    public function testThisMethod(\Exception $expectedException): void
    {
        // ...
    }

    public function thisMethodDataProvider()
    {
        return [
            [new \Exception()],
        ];
    }
}