That is so weird, but thank you for mentioning it! There isn't even an input programmed for that button, I have NO IDEA why it's doing that. Fixing it for the next build! I've also added an FPS counter to the Combat Demo Room so you can check there. In my testing I find that I do rub up against the platform sometime, but it never prevents me from landing on the platform. I'll continue tweaking collision until I find something that works.
Thanks!