Bug on gallery columns

Hello,
with the new update to WordPress 6.0, my gallery on theme Twenty Twenty One are acting strangely.

As you can see in the link the gallery should be arranged in 4 columns with this CSS:

wp-container-2 wp-block-gallery-1 wp-block-gallery has-nested-images columns-4 is-cropped

Instead it is cut into three columns (leaving the fourth photo therefore giant).

If you try, via inspect, to manually edit the code in columns-5 it puts them in four columns.

It is as if, since this new update, he sees a ghost image thereby destroying all existing galleries though.

Has anyone else had this problem? Would you know how to solve it?

Thank you.

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