Just like FodoxDiver said, I can't even play the game anymore without deleting my save files in PS4 data settings. I don't want to do that in case Unknown worlds fixes this issue. So looks like I won't be playing this game until this issue is fixed …
Same this just happened to me too. I am so mad, I had hours of time in this game. Now I don't even want to play it anymore because I lost my save file. This really sucks I hope they fix this somehow and get our save files back.