Issue with first vertical image in a gallery

If you look here:

https://asiamluxe.com/portfolio-item/skin-laundry-founder-yen-reis-believes-beautiful-skin-is-everything/

The gallery in the middle of the page words fine. The first image is a horizontal of a woman with a hole in the knee of her jeans.

The settings are:
Gallery style>Big image with thumbnails below
Big Preview> no scaling org width and height
Face same size> No

Whereas if you look here:
https://asiamluxe.com/portfolio-item/skin-laundry-founder-yen-reis-believes-beautiful-skin-is-everything-2/

The gallery starts with a vertical image and while it works properly when you click into the slideshow, where the images are 1000 pixels deep or wide (whichever dimensions is bigger is 1000, the other is less. For instance hire images are 1000 wide and vertical images are 1000 tall but the other dimensions is always less). That first image on the page appears much larger, about 1250 or so.

It seems to stretch the image to the width when it’s a vertical for the first image. Is the s the normal behavior? If so is it at all possible to have the image on the page itself, that first image not fit to width but rather display at its actual depth like it does inside the slideshow? If this is just how it works I will see if the client will let me crop those first vertical images differently or always use a horizontal.

Thanks so much.