iOS 26 lock screen depth effect not saving on iPhone 15 Pro Max

I updated to iOS 26 and when I create a lock screen with a photo,

when I add a depth effect I can see it, but when I save the changes,

they disappear and the image remains as the wallpaper.

This is something I can do without any problems on another model,

the 15 Pro, but on the Pro Max I am unable to keep these changes

permanently.

Any idea what might be happening? Thank you very much.

P.S.: Sorry for my English taken from the translator :-(

[Re-Titled by Moderator]

Original Title: Depth effect lock screen