Hey, are you using the pause menu to reach it (diamond shape with 3 lines on top right corner) or the bookmark-looking icon on the quick actions bar right above the text box? If you don't use the pause menu, then that might be the issue. After looking through the saving framework code, we found a bug which would replicate the behaviour that you are describing. This should be fixed with the next update, but until then, please try to use the game's pause menu to save and load.