I'm trying to make my SKUs searchable. Whenever I edit the product attribute at website.com/admin/catalog/product_attribute/ and set SKU to be searchable and save it, I always get a warning at the top saying one of my Cache Types (Page Cache) is invalidated. Then when I go to my Cache Management page and flush the cache it fixes the invalidated Page Cache BUT my SKU product attribute settings revert back to what they were before, saying no under searchable.
Anybody have a solution?
Still looking for help with this bug.