Long vertical images not showing properly depending on screen resolution

Hi, I have just found that with a screen resolution upper of 1505 px (aprox) the images which are very high are shown incorrectly.

You can try with the website. Just vary the width of the page and refresh it.

Please, check differences here: https://imgur.com/gallery/J8YSZp3

Also, when reducing to 1000 px, images get cut by their sides: https://imgur.com/gallery/WWpKOjh

And when reducing to 991 px or less, the images get mixed: https://imgur.com/gallery/5zAmlrd

I have tested in two different computers (laptop and PC).

I am using Astra theme with width of page to 1900 px but with native wordpress themes it happens the same (at least with Twenty Twenty). With Neve theme it happened the same.

Set Grid Plus to 6 columns and 30 px gutter.

Thank you!

The page I need help with: [log in to see the link]