DropDown Content don't show Items

Hi all, I don’t know why the dropdown content don’t show nothing becouse in the Hierarchy contains all items.

Any idea?
I’ts the problem NaN position?

Hello,
I have the same problem since the update to 5.6.

Any bug?

In the Template in the dropdown, there is a ScrollRect, set it to Unrestricted and it should work. I tried it and it worked.