The Cases page uses a different view, so you need to publish to that as well.

Then synchronise.

As @AussieAnders mentioned, when a Custom Field is added to the base view, it needs to be added to the required detail views in the Logical Unit. It is often missed though. 

Please do not forget to mark the above answer by Anders as the Best Answer if it solves the problem.

I had to log out and log back in for it to work.  Thank you!!

This right-click should do the trick instead of having to log out and log back in:

FYI, the equivalent in IFS Cloud is simply to reload the browser page (typically function key [F5]).