Describe the bug
When messaging a player using /message or /whisper you get a "Chat message validation failure"

To Reproduce
Steps to reproduce the behavior:

1. Install the plugin on a 1.19.3 Purpur Server
2. Send somebody a private message (using /msg or an alias)
3. Both players get disconnected

Expected behavior
The message should be send without any errors and should not cause any disconnections.

Server information:

• Operating System (for example Rocky 9): Linux 5.4.0-131-generic
• Server Software (for example Spigot): git-Purpur-1876
• Server Version (for example 1.19.2): 1.19.3
• Plugin list: BungeeGuard, CoreProtect, FastAsyncWorldEdit (WorldEdit), FastChunkPregenerator, FastLeafDecay, GrimAC, Harbor, InventoryRollbackPlus, InvSeePlusPlus, LuckPerms, spark, squaremap, squaremap-banners, squaremap-vanish, SuperVanish, TalisNoCreeperDamage, UltimateAutoRestart
• I disabled the plugin, that's why it's not listed above. I'm 99.9% sure it's the plugins fault since it just won't work with AntiPopup enabled.

Latest log file
https://gist.github.com/thevalleyy/3ceee4b44050db6400ced06e69b2874e

Additional context

[17:58:12] [Server thread/INFO]: thevalleyy issued server command: /msg thevalleyy hi
[17:58:12] [Server thread/INFO]: thevalleyy lost connection: Disconnected
[17:58:12] [Server thread/INFO]: thevalleyy left the game

This is the exact moment I got disconnected with the message "Chat message validation failure".
The server didn't crash or something, I stopped it on purpose.

Could you link me what build of the plugin you are using?

sure.

Okay, on it!

Wish I was that motivated 😂

2 weeks later- (it seems fixed, I have no problem with /msg...)

2 weeks later- (it seems fixed, I have no problem with /msg...)

Thanks for confirming, I'll mark the issue as solved.

2 weeks later- (it seems fixed, I have no problem with /msg...)

Thanks for confirming, I'll mark the issue as solved.

Your welcome!