Could you provide more context or specify what steps or process you're referring to? From your attached screenshot it looks like the data was added trice.
Dear Shen_Zang and mauriziobombace
I have a similar problem: the List widget is flakey - sometimes it works and sometimes it doesn't.
A common problem is that when I set a View, and apply it to a List, the first item is repeated for the entire list.
Sometimes when it does this, if I re-apply the View to the list it works (but absolutely nothing changed in my actions from the first to the second time I applied the View).
Other times I can't fix it: see attached screenshot.
Thanks in advance
Sunniva Boulton