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MC-112746

Pistons and super flat worlds

I was creating a minecraft custom super flat that was as follows:
Piston(facing down)
Air
Block of redstone
Piston(facing up)

*What I expected to happen was that the pistons would go back and forth once I updated them and my game would slow down and possibly crash

*What actually happened was that the piston(the bottom one) triggered once, and the other one didn't. Fine, but the wierd thing was that the arm of the bottom piston was both up and down and if I removed the base of the piston, the arm would appear. Also, a pattern of rings would sometimes appear with blocks of redstone being down instead of up as all the other blocks were

Steps to Reproduce:
1. Create a super flat with the custom settings listed above
2. Update a block of redstone
3. Wait until the game responds
4. Break a hole in the pistons and check them out

Comments 10

It the following the preset you are using?

3;minecraft:piston:1,minecraft:redstone_block,minecraft:air,minecraft:piston:0;1

No im using
3;29:1,152,0,29;1;village
I used a super flat generator to create it and it loaded like it should

I think the reason of this is because the pistons don't get a block update. Not sure if this is a bug.

Should I do more testing? I know this doesn't matter that much but to me it feels like a bug. It can be overlooked but I'm just trying to make Mojangs job easier.

Also (sorry for the double comment) the piston head is both up and down and if I break the base, the head stays. If I break the head though, the whole piston breaks.

Your preset is the same one I used, except you used the numerical ids.

The problem is when I tried reproducing this bug the internal server just stopped responding after I updated one of the lower pistons. What value did you use as view distance and how long did you have to wait until the server responded again?

Actually, @unknown's preset uses sticky pistons, not normal ones.

Hello,
Yes, I did use sticky pistons, sorry
My view distance was 8
My computer took maybe 20 seconds to respond.
Specs:
Amd a10 8700p
Radeon R6 8700p integrated chip
8 gb ram
Using optifine, if that makes a diffference
Got 60 fps, updated a block, froze to 0 for 20 secs and then back to 60.

Can't reproduce (sticky pistons), breaking a bottom piston freezes the game
Confirmed for 1.12.1

Is this still a issue in the latest version of the game(currently 1.13.1)?

If so, please add it to the affected versions, thanks!

Sawyer McCammon

(Unassigned)

Unconfirmed

Minecraft 1.11.2, Minecraft 1.12.1

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