I was following along with this tutorial (https://vimeo.com/446685994/124b831417), and things worked on my PC as they did in the tutorial until around 7:57 where after leaving an "overworld" screen (by clicking the "overworld" button) you re-enter the screen by double-clicking that rectangle. Double-clicking does nothing on my setup. (Version 4.5.9 downloaded about a day ago.) I can delete the screen, after which I can open it again, but once I leave, I can't get back into what I had.
Trying a few more map blocks, the same thing happens there, even without doing anything on the screen except hitting the "Overworld" button to leave.
Trying a few more map blocks, the same thing happens there, even without doing anything on the screen except hitting the "Overworld" button to leave.