Thank you for your feedback !
I tried your OP method on Windows and WebGL and couldn't make it work so I think the game was just kind with you ! :D The props become immediatly green once they land in the right area, no matter which way they are.
Oh okay, thank you for the user experience return ! That's true, I would assume users would click and not hold. I will be careful with those words in the future ! :)
I am happy you find the collisions nice and that you won !! It was a simple work but that made me comprehend a lot of physics things while testing it :)