Tor Messenger Themes Preference is positioned incorrectly on OS X

I am using Tor Messenger 0.0.6 on OS X 10.10.3.

When I open Tor Messenger Themes Preference, the content is positioned too high in the window, obscuring part of the Theme selector, and perhaps other content.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information