Issue when adding assets via a content region.

When viewing the assets in any bucket via a "Select or upload an image" link in a content region. The assets can be viewed in a right-hand panel but not all assets can be seen. It seems to be the first 24 show up but there isn't any pagination for the rest of the images. These can be accessed via the search facility and they are all viewable via the "Assets" link at the top of the page - where pagination is available.