Yes, I am seeing the same thing, so it appears to be a small bug.
Fortunately there is an easy work around if you haven't found it ... open it again and select none for the preset and save that, then open it again. It will remember the change to none, and let you set a new setting, which it also remembers.
Good to know I'm not alone in seeing this. I discovered exactly the same work around as you too.
Edward