List/ tree view problem ... on some computers

Hi,

I have a listview that is functioning perfectly on my computer but at some other computers the listtree reduces its size (hight + width) and moves to the upper left corner.

This makes it impossible to see data herein. Why is this ?

I believe this to be some setting on the users computer that has to be changed …but I have no idea precisely where ?

Maybe it is something else ?

Any suggestions ?

Best regards.