I completely agree. I updated to EndNote 20 but not being able to preview the PDFs as I browse through my library made me go back to EndNote 9. Unless you know all your references by heart (I have roughly 5,000), not being able to quickly preview the PDFs you search for within your library renders the software useless.
I have used EndNote since was a student (2002) and now I even recommend it to my students, but unless the “right/bottom-PDF” function is restored I will NOT buy subsequent versions and I will be forced to switch to other referencing software.
I really hope that the Developer team takes this issue into account.
