Very simple to test. Build a row of pistons (p) air (o) and blocks (b) like this.
pxopxopxopx
Watch what happens when you power the first piston and remove the power.
MC-54083
Stick-piston redstone block chain turns off instantly
Resolved
Incomplete
0
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been delivered.