redstone blocks fail to work with pistons correctly, and pistons get stuck in the on position.

when having a redstone block be pushed by a piston from below, or above, the piston will become stuck, even after the redstone block is deleted. if there are any other redstone blocks near the piston (not touching so as to affect the piston)this problem is amplified, causing all orientations of pistons to freeze. unfreezing the piston requires deleting the piston, or all surrounding blocks. pictures are named in order of which they should be seen, and do a better job of describing the issue.