Item does not appear when animating

I created two separate collections (so I could move the section later), but I ran into a problem. If earlier the collection was simply not fixed, now it does not even appear. This is an internal CMS issue, and please, I very much count on your help.

I created a little video again. See how the animation should look like. And then see what happens in the preview (spoiler alert: nothing)

That is, the item of the collection does not appear. Why? What is the reason?

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