When I am on a lot with objects behind windows (e.g. furniture), these objects cannot be seen from the outside. When I look at the lot, it seems as if the lot is empty, though its fully furnished.

When I go to a certain floor (e.g. the ground floor) the objects appear in a normal way behind the windows, but when I want to see the whole lot, they disappear again .

Please help me with this (I dislike those empty shop windows in my town ) thanks!!

This is a setting - I forget which one, but it's a graphics option which hides object on other floors, to improve performance. You can just turn it off.

Thnx whiterider , I just changed the setting and the objects can be seen behind windows.... so my "problem" turned out to be a very simple one, sorry to have bothered you with this !