Hi,
I have encountered this issue many times.
I add a custom field and it displays how I intend.
However, if I need to edit the custom field, the change isn’t implemented on the front end.
When I go into the WP editor AFTER REFRESHING PAGE, I notice that the custom field multiplied and automatically creates 5 to 10 duplicated versions of the newly updated custom field for some reason.
Furthermore, the first custom field (the wrong one that was updated) is still there so that is why the front end doesn’t change.
I can manually fix this by deleting the orignal custom field and the dupes but obviously not ideal.
Thanks,
Stephen