Can confirm, additional information I've seen concerning this issue:
Redstone dust on top of a solid block above the piston yields similar results.
The piston in question does not fix itself when updated by another redstone signal.
Problem appears to be tied to location where piston is placed as replacing the piston results in the same piston getting stuck.
Duration of redstone signal does not seem to change the result of piston getting stuck.
My testing has only been done on my Java Realms server as of this moment. I have not gotten a chance to duplicate this issue experienced by my group in a single player environment.
Shane Endres
Can confirm, additional information I've seen concerning this issue:
Redstone dust on top of a solid block above the piston yields similar results.
The piston in question does not fix itself when updated by another redstone signal.
Problem appears to be tied to location where piston is placed as replacing the piston results in the same piston getting stuck.
Duration of redstone signal does not seem to change the result of piston getting stuck.
My testing has only been done on my Java Realms server as of this moment. I have not gotten a chance to duplicate this issue experienced by my group in a single player environment.
EDIT: specified Java edition Realms testing environemt