I discovered a bug with the sticky piston or piston which causes it to stay on with no redstone signal
how to reproduce:
1. place a how to reproduce:
1.place a sticky piston or piston
2.Place 2 redstone blocks on the piston
3.break the bottom and top block
and see that the piston is bugged it is activated without redstone signal
or follow the steps on the photos
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Duplicate of MC-108, which was later resolved as "Works As Intended".

Thank you for your report!
We're tracking this issue in MC-108, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
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