Black background when gif or png watermark resized only

Hi, I noticed a problem – when I’m adding the image watermark in original size, everything works as expected. But, if I choose “Cover” or any other option that resizes watermark image (desired), transparent background shows as black.
All current PHP & GD versions, WordPress 6.22.
PHP 8.2
GD headers Version => 2.3.3
GD library Version => 2.3.3

Please advise.