My local copy of Umbraco has the save button showing up as [buttons_saveAndPublish] and a lot of the other links in Umbraco have the same issue. I checked my console and I don't have any JavaScript issues showing.
OK, so it looks like it broke when I changed my target framework from 4.5 to 4.6 to fix a TLS related API call issue
<httpRuntime requestValidationMode="2.0" enableVersionHeader="false" targetFramework="4.5" maxRequestLength="51200" fcnMode="Single" />
Once I changed the 4.6 to 4.5 this issue went away