When overview mode is entered there are basically three views one can get: windows, all applications and search/filter results. When search results are displayed it is possible to navigate though items with keyboard's arrow keys. When all applications are shown: it is possible to navigate with arrow keys after hitting tab key (for some reason). When windows are shown - arrow keys does nothing.

It would be great if it would be possible to select a window with the arrow keys. If implementation of such feature is very difficult, at least it would be good if the behavior would be same in search and all apps views.