I can't see the details panel in a blueprint (UserWidget) (UE5.1.1)

I can’t see the details panel in a blueprint (UserWidget).
It only works with the root element.
Some options are also not available in the drop-down menu when right-clicking.

video attached:

I don’t understand…
Maybe there is some disabled option?

Thanks for your help!!

i got fix it

What did I do?
1-.I wrapped the father with anything
2-I replaced the father with the child

Example:

Why did the problem occur?
-I have no idea.

Maybe someone can explain what happened… please explain it in a new comment.

Thank you so much!!