Groupshare Silverlight UI very frustrating

I believe I reported this a while ago, but I had to update some user roles today and experienced it again...


You will notice the green arrow *overlaps* with the scroll bar. Scrolling down is not possible by clicking on the scroll bar and instead the green arrow gets clicked...

This is just one example, but the UX experience in Groupshare (Silverlight) is very frustrating...