I have noticed in all of my builds that require a monostable circuit, the pistons do not leave the block it is supposed to monostable behind. The only way I can get a sticky piston to monostable is to give it a .5 redstone tick pulse, by using a monostable on a sticky piston with a redstone block, then having the piston I want to monostable 1 block in front of the redstone block. Therefore, the redstone block only powers the sticky piston for a really short amount of time. I do not now whether this is a bug, or a feature, but I would greatly appreciate it if it was resolved.