Preview.app Glitch throws Display Back to First Page

OS X Yosemite v10.10.2; Preview.app v8.0

I've discovered a very annoying glitch in Preview.app; in which when I select all pages after I showed thumbnails, and then mark all pages with [Command]+[A] and unmark a view pages by holding the Command Key and klicking some; the program throws me back to the very first page of the .pdf document. Anyone knows whether there's a fix to be made?

–inbetween I click a page on the left panel with [cmd] held–>

P.s.: Why isn't there community field for every OS X utilities like Preview.app? People might think I've spammed with this post.