Pistons can be powered by any Redstone source block (and levers as well for some reason) one block higher than it should normally be
Environment
OS : Windows 10 Pro (22H2)
Java Ver. : 17.0.3 64Bit
CPU: i7 12700k (No Overclock)
GPU : RTX 3060
RAM : 4x8GB @ 3200MHZ
Allocated Ram : 2048MB
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.
If you would like to learn more about this particular feature, see this article on the Minecraft Wiki.
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