This bug only appears in two cases:
There are Business Mappings with more than two related elements. E.g. a Business Function, a Business Process and an Information System are connected via a Business Mapping.
Or there are Business Mappings for one type with two realtedt related elements, but with different endpoints. E.g. a Business Function and a Business Process are connected via a Business Mapping. And also a Business Function and an Information System are connected. Then this bug would appear with the Business Function List View.
Workaround 1: Use the List of the Business Mappings itself, not the list view of another type with the Business Mapping colums columns added.
Workaround 2: Use the Single Element View of an element.