Can't select all albums when Finding Duplicates

[ralphl]

I am running Version 7.0.0-beta2.  When I do a Tools>Find Duplicates and try to select an album, I get the pop up list of Albums, but if the list is long it won't show the last albums in the list.  I imagine it is supposed to scroll, but I can't make it scroll.  Hence, I cannot select some of my albums to do a Find Duplicates.