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Not sure if there's a way to prevent this already but there should be a way to make a scene unclickable with the exception of buttons. My friend pointed this out with he tested one of my games and said it was strange to be able to click anywhere and start the game. Only the play button should do that.
Hello! It is possible. There is a checkbox for "stop page from automatically going to next" at the bottom of the edit page dialogue view, which does what you're describing.
Thanks, I'm glad to know it's possible!