Detailed Description:
When a repeater is placed diagonally to a piston, the piston is activated even though there are no blocks directly powering it. This behavior should be impossible, as there is no redstone component or block directly energizing the piston. Moreover, this issue occurs regardless of the piston's facing direction.
Additionally, pistons can be activated from the front using redstone blocks. For example, if I try to build a contraption where two or more pistons are side by side and meant to push redstone blocks, it's not possible — the pistons become powered simply by the redstone block they are supposed to push. This causes a conflict with any other redstone power sources connected to them.
While recording the video to demonstrate the bug, I also discovered that when a redstone block is placed in front of a piston, and a repeater (or possibly any powerable block) is placed at side to that piston, the adjacent pistons are also activated — even though there are no blocks directly powering them.
1. Steps to Reproduce the Issue:
Case 1 – Diagonal Activation:
Place a piston facing any direction.
Place a repeater diagonally to the piston (one block over and one block to the side).
Power the repeater.
Observe the piston being activated.
Case 2 – Front Activation with Redstone Block:
Place two or more pistons side by side, all facing the same direction.
Place a redstone block in front of each piston (the face they would push).
Observe that each piston becomes powered by the redstone block it is supposed to push.
Try powering the pistons externally with another redstone source — this causes a conflict.
Case 3 – Side Activation with Redstone Block and Adjacent Power Source:
Place a piston with a redstone block directly in front of it.
Place a repeater (or possibly any powerable block) next to the piston.
Observe that other pistons adjacent to this one are also activated, even though there is no direct power.
2. Expected Result:
Pistons should not activate from diagonal redstone signals unless there is a block directly powering them.
Pistons should not be powered by redstone blocks they are meant to push, especially from the front face.
Adjacent pistons should not be activated unless there is a valid redstone power source directly powering them.
3. Actual Result:
Pistons are activated diagonally without any direct power source.
Pistons are powered from the front by redstone blocks they are supposed to push.
Placing a repeater or a block next to a piston (with a redstone block in front) causes nearby pistons to activate unexpectedly, even without direct redstone input.
Check the attachments
Duplicate of MC-108.