Previously, when selecting the "text" tool in preview in order to add a note to a PDF, I could specify where to add this text note by clicking on a particular place of the pdf before actually typing in. However now it seems to be not the case anymore: The text box automatically appears exactly in the middle of the current page. This is incredibly inconvenient as I have to drag the them around after typing to put them exactly in place. I can't believe they have dished out such an un-intuitive design. Is there a way to revert to the old fashion, or do I have to change software for PDF?
Well Adobe Reader's slow page scrolling is simply unbearable. In the end I decided to use Skim, which a lot of people seem to be using as default PDF viewer on OS X already. I'll only use Adobe Reader if I'm dealing with very important/complicated document, or if I want to change the background color of the document when I read.
EDIT April 2017: Now that Adobe Reader's efficiency seems to have been improved considerably, I just switched to it instead.