Yaa that up and down thing, we made the game and realized that there was a foundational flaw. Also that bar goes up is not a bug, some birds have 2 lives so when the health goes down for live 1 the health bar grows again. Sorry for the confusion for that feature and ya according to the idea that all we could do the up and down thing is out of control for us. If we do something then we have to steal the freedom to place pipes anywhere and also it will take too much time to fix that design flaw