In Seas the Day! update the recipe for Cobblestones was changed from Rocky Turf to Magma Turf, even in my RoG-only world.
Steps to Reproduce
Start a RoG-only world. Try to make Cobblestones. Realise that there is no Magma Turf anywhere. Feel sad.
This issue has been fixed in either a future version or updated in a previous version.