1) If I hover over the little arrow in the first box, the cursor doesn't change to a hand, so I can't [usually] click to see the dropdown (sometimes I can anyway, but mostly not):

(The lower arrow works as it should.)
2) This advanced prioritization was opened solely for testing a bug in another thread, so when finished, I tried to right-click to get rid of it:

Easier said than done... One option claims to open the advanced prioritization which is already open. And the other removes the resource from the list altogether. None removes just the advanced prioritization. So I had to remove it altogether, locate it again in Library, and then drag it back to its place in the list.
The first option should, of course, only look like that when there is no advanced prioritization. When there is, it should switch to something like 'Clear Advanced Prioritization'.
From http://community.logos.com/forums/p/74881/523828.aspx#523828:
3) 'Odd' name in the lower box:

4) That odd name is also cut off at the bottom.
5) "Prefer these resources:" is bold on Windows, but normal on Mac. (Bold is better.)
6) Titles having advanced prioritizations are in italics on Windows, but normal on Mac. (Italics is better.)
And while I'm at it: is there a case for making the advanced prioritizations collapse/expand? I've always found them extremely annoying. They waste space, take time to scroll through, and generally disturb the layout of the panel and the ability to get an overview of one's prioritizations.