When I do C-c C-e to start an org export, the export buffer opens at its bottom, with the top cut off in the window. In past versions the buffer opened at the top.
I am using GNU Emacs 25.1.50.1 (x86_64-apple-darwin15.3.0, NS appkit-1404.34 Version 10.11.3 (Build 15D21)) of 2016-03-13 and Org mode version 9.0.5 (release_9.0.5-361-g7b4269 @ /Users/mannd/git/org-mode/lisp/). Thanks, David Mann