I have that problem too. It kinds pissed me off because since im sitting on a couch when i use my laptop, my stomach moves the volume slider so it changes the tool.
It DOES come up its just that guys problem -.- It's not very interactable but I just put more cracks into the window and cut one of the things that hold up the fuel tank.
I made it so I could use it well in Phun. I added a spring to connect the two wheel's together and raised the strength to the max and it now work's like the algodoo edition
I was wondering why little ball's popped out of it
I turned the cover into Helium so I could see whats going on inside the grenade. Cool, mechanism for the trigger, but it messes up easily once you pull it