indestructable piston block

[Saidas25]

WorldEdit Version

Fabric-Official(7.3.0+6678-5574ad)

Platform Version

Fabric 0.15.17, 1.20.4

Confirmations

• I am using the most recent Minecraft release.
• I am using a version of WorldEdit compatible with my Minecraft version.
• I am using the latest or recommended version of my platform software.
• I am NOT using a hybrid server, e.g. a server that combines Bukkit and Forge. Examples include Arclight, Mohist, and Cardboard.
• I am NOT using a fork of WorldEdit, such as FastAsyncWorldEdit (FAWE) or AsyncWorldEdit (AWE)

Bug Description

Don't know if this is a bug, but:
You can make indestructable ghost blocks from pistons.
Took a while to find out why my pistons aren't working after i deleted them.
https://i.imgur.com/3rmfEe9.mp4
here is a video of it happening

Expected Behavior

when i delete the pistons and return them, they wouldn't become invisible unbreakable blocks

Reproduction Steps

1. place a few pistons connected to a clock
2. delete them with something like /replacenear 5 air
3. do /undo
4. when you do that, some of the pistons become... unbreakable air blocks???

Anything Else?

No response

[Zeranny]

What you have there is the "moving_piston" block.
At the moment you replaced them the pistons were in a sort of half way step between being extended and being contracted.

You can replace moving_piston with air if you want to get rid of them.