Stop dialog boxes popping up behind dock Since upgrading my MacBook Pro to Yosemite I noticed that a lot of programs pop up dialog boxes BEHIND the Dock, making it hard to select buttons. This happens in lots of programs (including some Apple programs). It does not seem to be possible to move the dialog boxes.
Apparently this is a OS X 10.10 bug. Apparently they get 22 pixels higher each time.

There is a workaround. 

If you hold Shift and drag to reduce width this will shrink the dialog box and let you resize.