Not using a later version because they haven't got printing to work yet on OS/2 and I print a lot from Web pages.
The difference in window size required is about 1 inch. Also the behavior is somewhat different.
Moving in the right edge on the old site, you cut into the right column about 1/4 inch and get a slider bar before it moves the right column down to under the left column.
Moving in the right edge on the new site, the right column is moved down before you cut into it and get a slider bar.