Z5.0: Unwanted expansion of search result list.

compunk

When I drag items from collapsed list of library pane to subcollection, there is no error.(After dragging the list remain collapsed).

But when I drag items from searched result list collapsed to subcollection, after dragging the list expands, which bothers me.

Please have a look at my video : http://acpforkr.cafe24.com/search_expansion_error.wmv

Is it normal?

Thanks.