I can't recall how I did this. But I assume I have pressed a strange key combination and dragged around in the Reference Pane. Now the left border of my Keywords field is displaced and I don't know how to go back to the origin. I have tried to drag the border with the typical key-combinations of cmd, alt, ctrl and shift without any result. I have tried to switch to standalone window and back, again without desired result. Please see the picture.
Thanks a lot to Jon or any other BE magician for providing me with the keys I need to press or preferences file I have to remove or ...?