While looking for bugs about dropdowns in Preferences, I found that the mouseover behavior for Privacy -> Notifications Permissions dropdowns is inconsistent. Sometimes, moving the mouse causes the dropdown to disappear. I was able to reproduce it around half the time, movie to follow.
Created attachment 8897549 [details] Screen capture of the problem described Nightly (2017-08-15), OS X 10.12.6 (release)
Priority: -- → P5
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