Particularly strangely... after the update, I now have five infinite "Sword+1"s, but I don't actually have an infinite set of "Sword+1"s. I equipped one of those five "Sword+1"s and it turned out to be cursed.
(EDIT: No, I did have an infinite set. It was just sorted to the end of the list, so I didn't notice the "Inf" indicator.)