Summary:
When a sticky piston pushes a gravity affected block upwards then downwards, the block itself is destroyed.
Steps to Reproduce:
Place a sticky piston facing upwards
Place two or more gravity affected blocks (sand, gravel, concrete powder, anvils) on top of the sticky piston
Extend and retract the sticky piston
Observed Results:
The block breaks when the sticky piston retracts.
Expected Results:
The block should not break when the sticky piston retracts.
Linked issues
is duplicated by 45
BDS-6282
Nether update causing sand to break on retracted pistons
Resolved
BDS-7020
concrete powder, sand and gravel drops in use with pistons
Resolved
BDS-7308
Sand/gravel breaks on sticky pistons
Resolved
BDS-8368
Sticky piston
Resolved
MCPE-80852
Medieval Gate no longer opens and there is a hole in the ground!
Resolved
relates to 1
Attachments
Comments 22
It happens with normal pistons also
It's a pain as most my cities have gates connected to daylight sensors so that they open and close each day cycle to keep mobs out, now that the gravity blocks break gonna need to find a work around till it's fixed
The breakage of an unsupported gravity block is probably duplicating MCPE-40404. In the latter, the chance of a block breaking appears to be about 50%, and sometimes a ghost block is left behind. is that also true of this report and its duplicates?
I’ll see if I can replicate the issue tomorrow, but I don’t recall it being a 50%. It happened every time and broke all my piston doors which used sand or gravel. I want to say SilentWhisper captured this bug in one of his Bugrock videos.
It definitely doesn't just happen 50% of the time, and, (I don't know if it's the implication), the breakage certainly hasn't been causing duplication of any kind. In fact, I'd say that I might've lost blocks from this glitch, rather than gained. The block breaking has happened consistently with every gravity-affected block I've tried it on; This is also true for placable gravity-affected items, such as the dragon egg and anvil. I don't think this is the same as MCPE-40404, but it could be caused by a similar reason.
I've never had any ghost blocks appear, myself, but I imagine that could definitely happen for some people.
Just to be clear, the issue is primarily being caused by sticky pistons pulling the block out fron under a gravity-affected block or item; Breaking the blocks manually and having a normal piston push or retract the blocks underneath don't seem to cause the glitch whatsoever.
1.16.3, Bedrock still has this issue. Its broken my door to my dirt mound and its annoying, this issue is 4+ months old. This should be fixed.
It happens 100% of the time- and with just one block on a piston too.
Edit: To fix broken doors, add an extra 1-tick delay to the bottom repeater. This should fix the issue.
Can confirm.
This seems to happen when the block underneath sand is moved downwards or to the side and when that block has a surface at the top (touching the sand).