My client has been using cornerstone to build their blog posts for some time now and the cornerstone interface has suddenly disappeared from the posts section of the site. I can still edit pages on the site in cornerstone, just not posts or anything else for some reason when I was able to before.
The only support thread (https://theme.co/apex/forums/topic/cant-use-cornerstone-on-blogposts-page/) I can find that details a fix for this seems to be out of date as the ‘cornerstone’ section under settings doesn’t exist. I also can’t find anything similar in the ‘x’ menu under cornerstone or settings.
X Theme 6.3.6