Hello forrestcupp, and thanks for making this! Awesome job!
I think I found a small bug: If you have a Drop Down Box with scroll bar, and then scroll it by left-clicking the up/down arrows, or by dragging the scroll-position-indicator-thingie (Isn't that the official name of such a thing?), then the drop-down closes on mouse-up.
So in effect, you can only really scroll it with the mouse wheel.
[EDIT]
Um, further investigation shows that this is probably not a bug, but rather a me that should read the manual better... Sorry. :oops: