Hi,
That sounds strange. Try this: view that post and check the values in the custom fields. Then enter “newburgh” in one and “in” in the other and publish the post.
Does the map show the same location? I just tried it – but I got the center of Newburgh, IN, as expected.
Is it possible some other field value is getting set and interfering with the address?
Please send a login and I’ll take a look at your site. Or, see if you can replicate the problem for me on a demo site: