Hi,
We've experience an issue twice after deploy, where a new PageType won't get registred in the database correctly.
It is listed inside the Admin/Content Types interface, but if we try to create a page we get the following database error.
The INSERT statement conflicted with the FOREIGN KEY constraint "FK_tblContent_tblContentType". The conflict occurred in database "Website_V2", table "dbo.tblContentType", column 'pkID'.
To fix the issue we've had to restart the two instances on our App Service in Azure. After the first instance is restarted it shows up correctly in the database and becomes usable.
We're running CMS Core 11.13.2.0.
We can't recreate the issue on our development, QA or Stage environments. We're running two instances on our production environment, which might have something to do with it.
And just to note - the guid of the PageType is unique and we are running with enableModelSyncCommit enabled in production.