Image cropping doesn't work with custom center

[Jozsef]

The site is displaying a list of full body portraits that I'd like to crop with a focus on the face/shoulders.
No focus has been set on the images and it's hundreds of them so I want a sensible default.

This is the code below but it still crops from the top of the image, or the actual center (50%,50%).
Is it a bug or I'm doing something wrong?

$image = $gallery_page->images->first()->size(540,404,array("cropping" => array('50%','35%'), "quality" => 80))->webp->url;

It's based on the latest API reference I've found: https://processwire.com/api/ref/pageimage/size/
It's very late but is it something I can't spot here? Should it work?

[Sanyaissues]

$image = $gallery_page->images->first()->size(540, 404, [
    "cropping" => ['50%', '35%'],
    "quality" => 80,
    "focus" => false
])->webp->url;

Maybe it is auto detecting a focus presset. Try disabling it.