4.0 EA2 - Column Width in SQL Editor

I execute the following simple sql:

SELECT 1, 2, 3, 4

FROM dual;

In SQL Developer 3 and 4.0 EA1, the columns displaying the data were as small as possible to fit the data/column name

In SQL Developer 4 EA2, the columns are expanded so that the 4 columns consume the entire width of the screen.  I am not able to make all 4 columns smaller.  When I make column 1 smaller, then columns 2, 3, and 4 all increase in size.

Is there a setting to control this behavior?

Thanks,
Jason