Describe the Bug

I had 2 elevators and 2 windmills on my server, each with a set of superglued blocks acting as the elevator carriages and windmills respectively. The server crashed recently a few times due to (I think) unrelated issues related to RFTools dimensions, etc.

After getting the server to start again, the elevators are still 'active' (i.e. the rope is visible) and the windmill bearings are also 'active' (they're turning), but all the blocks attached to both have completely disappeared. Disabling the elevator or windmill doesn't bring the blocks back. Trying to re-enable the elevator or windmill after doesn't work because it can't find blocks to attach to anymore.

Note: Other Create things (waterwheels, cogs, etc) all seem to be fine.

Reproduction Steps

1. Have elevator or windmill active
2. Have the server crash or restart unexpectedly
3. Re-start the server and log in, look at the elevator or windmill
   ...

Expected Result

The windmills and elevators still exist and still operate

Screenshots and Videos

No response

Crash Report or Log

There were multiple crashes today that resulted in this, spread over ~2 probable causes. In order:

crash-2024-04-01_13.09.12-server.txt
crash-2024-04-01_13.16.23-server.txt
crash-2024-04-01_13.23.04-server.txt

The above crash had repeated hangs even after the first restart. Was 'solved' by entering the command kill @e, which outputted:

[01Apr2024 13:57:48.638] [Server thread/INFO] [net.minecraft.world.entity.LivingEntity/]: Named entity Skeleton['Undead Knight'/189, l='ServerLevel[world]', x=4.30, y=118.41, z=173.30] died: Undead Knight was killed
[01Apr2024 13:57:48.683] [Server thread/INFO] [net.minecraft.world.entity.LivingEntity/]: Named entity Skeleton['Honeyed Archer'/274, l='ServerLevel[world]', x=-155.25, y=93.25, z=-108.04] died: Honeyed Archer was killed
[01Apr2024 13:57:48.783] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: [Rcon: Killed 390 entities]

After which things seemed fine / players could log back in.

crash-2024-04-01_14.45.17-server.txt
crash-2024-04-01_14.34.45-server.txt

These crashes ^ were (probably) caused by an RFTools dim world that caused the server to hang because of processing. Having the player exit the world immediately on log in using /home seemed to solve the issue on its own.

Operating System

Windows 11

Mod Version

0.5.1f

Minecraft Version

1.20.1

Forge Version

47.1.84

Other Mods

Running the Direwolf20 1.20 FTB modpack with no changes, version 1.12.1: https://www.feed-the-beast.com/modpacks/119-ftb-presents-direwolf20-120?tab=about

Note: modpack uses NeoForge instead of Forge

Additional Context

No response

contraptions are entities, /kill will kill them