Lol. Oops. Thanks for playing! And yeah, we're aware of that bug and already fixed it. We'll update the game once the jam is over. Turns out HTML5 doesn't like it when you use a floating point as the index for an array, and GameMaker considers image_index (the frame of the current animation) as a floating point. I thought it was an integer. We did all of that just so the propeller hat moves up and down when you're walking, that's why it happens on that level specifically. Just as a fun fact I guess lol. Thanks again for trying out our game :D