Workaround
You might try moving the screen upwards to see the options at the bottom of the screen or try to set it wo fullscreen by double click on window's title.
Just hit ALT+SpaceBar. Now the Dialog's context menu should pop open. Press Down Arrow twice to select "Move Window" now hit Return. now you should be able to move the windows with your arrow keys. Hit CTRL+Retun to cancel this mode.
Attention: When moving the Mouse it's jump back to Mouse Curser Position.
It might not work with all windows .
