Changing shape of object using kerf offset

After cutting squares and calculating kerf using my LM2 with NEJE A40640 I switched to kerf offset to cut a new square and instead of a square, I got rounded corners. I get this on both the LM2 and Xtool. Obviously I must have changed something somewhere but what did I change?
Thanks for the help in advance.

You’re not talking regular offset?

Depending on offset direction and part shape, kerf offset can apply a corner radius.

This can be seen in the preview although it may be beneficial to use an exaggerated kerf for visualization. I am using ver 1.4.05, if it makes any difference.

That is not the issue but I believe I found it.

Can you share with the rest of the class?