“Additional Options” button not working

Under woocommerce -> settings -> product filter, I’m trying to click the “additional options” button next to each product filter and nothing happens. All of the plugins/themes are up-to-date, I tried deactivating all the plugins other than WOOF and Woocommerce, that didn’t do anything. I tried switching to a default theme, that didn’t work either.

I’ve tested it in Firefox, Chrome and IE, nothing.

Is this something you’ve seen before? Any ideas on how to fix it?