WindowIterator should emit items in order when scrolling backwards. #2857
Description
Scrolling backwards, WindowIterator should emit items in order eg. 10, 9, 8, 7,...
Currently backward scrolling is only considered on a Window basis, but items within the Window are ordered forward.
Using a limit of eg. 3 would therefore lead to something like 8, 9, 10, 5, 6, 7...