Crash After Renaming Saves Folder

When in the single player worlds menu, if you rename (or possibly delete) the 'saves' folder, the game doesn't know how to handle it. So it crashes, while this isn't a scenario that should happen, or will happen often, I thought I should at least bring it to someone's attention. In 1.12.2 (and probably earlier, to a point) the saves folder being deleted or renamed would only result in a message warning the user that the saves folder was no longer accessible, but in 1.13, the game crashes.
It won't allow me to attach an image of the earlier error message (1.12.2), but if it's needed for any reason here it is.