Note that the fix means that if you save to disk with multiple books selected and two or more of those books end up having the same filename the filename will be adjusted. It does not mean that save to disk will not overwrite existing files from a previous save to disk operation.
Note that the fix means that if you save to disk with multiple books selected and two or more of those books end up having the same filename the filename will be adjusted. It does not mean that save to disk will not overwrite existing files from a previous save to disk operation.