FAWE commands not running at all

[DoogiePC]

Server Implementation

Paper

Server Version

1.21.11

Describe the bug

FAWE build 1257
Every worldedit command completely freezes up, no command will run, not even a message saying anything. Even /fawe debugpaste freezes up.

It seems like if certain worldedits are done which we can't figure out yet, everything locks and freezes.

Additionally, if I run /save-all flush
it lags a TON https://pastebin.com/SuUjCtq5
It only lags when this issue is occurring, if I run that command normally, no issue occurs. It seems like chunks are being held up somewhere.

(Addons: gobrush, gopaint, arceon, voxelsniper all updated to the latest version)

To Reproduce

We're not sure.

Expected behaviour

The worldedit to go through as normal and not freeze up the servers worldedit.

Screenshots / Videos

No response

Error log (if applicable)

crash-2026-01-01_04.02.21-server.txt
The server also crashed abruptly once which may be related?

latest (7).log
Latest log, the log ends where the issue began.

Fawe Debugpaste

https://athion.net/ISPaster/paste/view/a2c3aa2f35d040d4b505991f75d5151c

[PierreSchwang]

Does it only happen with the named build and or did that happen with earlier builds as well?

[DoogiePC]

Does it only happen with the named build and or did that happen with earlier builds as well?

I don't recall it happening before this, so I will downgrade to #1253 and see if it does it on that version.
(On version #1253, it doesn't do that weird thing with //brush sphere where it ignores where you look to place the sphere)

[DoogiePC]

Does it only happen with the named build and or did that happen with earlier builds as well?

Ok, on version #1253 it still does it. I managed to run fawe threads and heres the log, idk if it helps:
https://pastebin.com/N0VhvDqc

I tested by setting 1 block with worldedit, it took 118 seconds.

[DoogiePC]

Ok so update:

I've tested with papermc builds including the earliest paper build for 1.21.11
and the earliest FAWE build for 1.21.11
it does it with all of them.

It seems to be related to players using any kind of worldedit brush, or voxelsniper or anything related, that seems to quicken the issue. It's like it gets overloaded and all the chunks get held up? idk why

I've managed to replicate the issue quickly multiple times by setting my worldedit brush to blendball 50 (i know large, it just makes it quicker) and then spamming it on land and it freezes up very quickly after that.

[SirYwell]

I cannot reproduce this with Paper 1.21.11-72 and a build from the current FAWE main branch. Can you try with only FAWE installed? And can you find out the differences of your configuration from the default one?

[MattBDev]

I can confirm his issue. I was chatting with him in real time while it happened to him. Doogie has had issues with the disk history on his server before so that could be one of the causes but I’m not quite sure until I actually take a good look at this tonight and this weekend.

[StealthyExpertX]

This was an issue our team ran into recently, causes issues with being able to use certain commands such as /cave in regions even when opp-ed, this possibly could be an unrelated issue.

[Feriach]

I have the same issue and had it with multiple players through the years(since 1.19ish?) but it was pretty rare and we weren't able to reproduce it successfully until one of our players did it with Arceon command: //wfc 100 1 8 -s
My debugpaste:
https://athion.net/ISPaster/paste/view/fff556b852d14822987fa93fdecc07dc

FAWE just stops working for this particular player and only server restart fixes it.