Since the updates featuring live preview my save system doesn't work properly anymore

Since the updates featuring live preview my save system doesn’t work properly anymore in the preview window. I have two ways of loading a saved game, one from the scene I actually play and one from the introductory scene. When loading a saved game from the actual scene, the position of the player is different from the saved position and he lands on unplayable areas. When I load the game from the main (introductory) scene, the positioning works fine. I haven’t changed any code regarding saving and loading, this behavior first appeared after the update featuring live previews.
By the way - is there any way to download an older version of Gdevelop5?