Hello,
Normally, when you leave a solo world and then return to the list of worlds, you are supposed to have the last image you have seen of the world next to the world. However, it doesn't seem to work in these versions. For example, the last picture I saw of a world (Image_1) is that of a lake, whereas the world preview picture (image_2) is of a beach.
This is false. It takes a screenshot roughly 1 second after you spawned in the world, and that screenshot is not changed by the game after.