This bug was a problem on some computers running 010 Editor version 2.1 or before. If
010 Editor was placed on the second monitor of a multi-monitor system, the columns of some grid controls could not
be resized properly. The fix is to move 010 Editor back to the primary monitor and resize the
columns there. Also this bug has been fixed in version 3.0 or greater of 010 Editor so
please consider upgrading.