That’s the thing – I don’t see any JS errors in the browser console. It just says: “JQMIGRATE: Migrate is installed, version 1.4.1”.
Could the problem be due to Autoptimize? When I cleared the “Autoptimize” cache, the JS error in Advanced Custom Fields went away for 1 minute before coming back.
Beyond that, do you know where I would look for corrupt JS files?
Thanks!