Scrolling after selecting

I am having a similar issue experienced here: http://support.adminarsenal.com/entries/21738945-Scrolling-through-Inventory

I have about 100 rows to scroll through after a deploy, and I can do so as long as I don't select/highlight any, but selecting one and then scrolling down jumps back up to keep that highlighted row within the visible pane. This is a problem if I want to select a large group beyond the visible list.

I have tried holding shift and pressing the down arrow but that has issues as well, where it will only seem to highlight 2 at a time, then move that selection down by 1 for each down arrow press.