If you create an arc that extends across a board and then use it to create a cut path, it will leave the top portion of the arc uncut. If you create a line and do the same thing, it will leave it all uncut. If you set the line at an angle it will leave the top portion of the line uncut.
I noticed this behavior in previous versions for the arc, but investigated a little further with the line and angled line in 1.184.
All cut paths seem to show the full cut as they should once you flip the cut out.
I have attached a screenshot to illustrate what I am describing.
dave