Powered pistons extend from closed on world load
The drop down list for affected versions didn't work for me, but it's 1.1.4.
Verification builds:
1.1.4 Retail
Summary:
A powered piston, be it Redstone block, torch, dust etc. Will, on world load, extend itself from being unextended.
Impact:
This effectively breaks any use of pistons in Redstone mechanics as it can create random pulses through a system. This can cause broken maps that use these systems and makes pistons unreliable.
Repro Steps:
1.Place Piston
2.Power Piston with torch, Redstone block, etc
3.Reload World,
Observed Results: You will hear the piston extend itself most of the time on world reload. If you put a Redstone block on the extended piston and a note block, when you reload the world even though the piston should already be extended, it will trigger the note block again.
Expected Results: The piston should remain extended the whole time unless unpowered. World reload or not.
Screenshots/Videos attached: https://www.youtube.com/watch?v=8_1P7GbNUl4
Notes:
2017-07-20, 09:07 AM
2017-08-17, 07:23 AM
2017-08-17, 07:23 AM
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