List View are not showing the elements

Hi, im trying to create a kind of datagridview but in this case im using “List View” the problem is im trying to add the elements of the list whit a botton and radio botton, i tryed on another proyect and works greatly but in this case the list is not showing the elements, are only showing the first one ikw why.

what i can do?, is a kind of bug becouse i realy have doing the same thing whit another one and theres no problems

Like i say i have done another proyect whit the same code

and this work whit no problems

video-1565649621.mp4 (290.8 KB)

Try to delete the component and add it again.