Description
In Mac OS X, the standard for window management is that windows are accessed from the Window menu, and their views are manipulated using the View menu. SourceTree breaks this standard by placing access to the Bookmarks and Hosted Repositories windows in the View menu. They should instead be in the Window menu.
For more details, see The Window Menu on this page of the OS X HIG:
https://developer.apple.com/library/mac/documentation/userexperience/conceptual/applehiguidelines/Menus/Menus.html