Resizing Images

Hi,
Wordpress has a serious problem resizing/compressing images that i cannot fix in any way. Using the latest current WP (5.6) start with a large (4096 x 4096 pixels) all white RGB(255,255,255) image, example here.
In the “Media Settings” set the images sizes to something like this:

Large Size: 1920 x 1920
Medium Size: 510 x 510
Thumbnail Size: 247 x 247

Now upload the image to the media folder and check the thumbnail size (247 x 247) image that was created, it will have horizontal stripes of RGB(254,254,254). This is a really big problem when using WooCommerce product images with white background because it will be very noticeable.

I cannot reproduce this in any software, tried some major image editing tools free and paid and tried a lot of online compressing/resizing tools. With this tools i tried lots of different variations of Resizing then Compressing, or Compressing then Resizing, or Resizing without compression but i end up with an all white image at the end.

I also tried to disable WP compressing but as far that i could tell it isn’t possible, only way is to up the compression quality to 100 but that still processes the image.

add_filter(‘jpeg_quality’, function($arg){return 100;});
add_filter(‘wp_editor_set_quality’, function($arg){return 100;});

My question is, is this fixable? Or at least can we workaround this be disabling compression or uploading ourselves the different image sizes with the correct naming?

Thanks