I went to the Difference dropdown, and selected one. But after that, I had trouble to get out of the Difference box using the keyboard.
How do I change focus to the display pane? I tried Tab and F2, but had to grab the mouse and click.

The main reason I want to get out of the dropdown is the difference in navigating between successive differences: Up/Down inside, but Alt+Up/Down outside of the box. And both Up/Down outside and Alt+Up/Down inside the box have a (different) function.
