Word to the wise: going full screen is a Bad idea; everything breaks. also, still can't boop anyone. still a good demo
I've been looking for an answer to why this happens sometimes, but no luck yet. I put some code in there to help fix it and it hasn't happened to me since but I guess I missed something.
Can you describe what happens for you?
Booping will happen in the full version when I can give it some effects.
In short: It's as if the program doesn't realize that you have changed the window size / dimensions; therefor, it doesn't move or resize any of the models, the text, or the background images correctly back to where they're supposed to be.
if it helps, this is the file's HASH-