Paper 1.21.1: lang prefixes not dissapearing

[RikMichiel]

Are you using MySQL?

Yes

Are you using a proxy?

Yes - Velocity

"/version ChatControlRed" - plugin version

11.0.4

Optional: Error log

No response

ZIP of "/chc debug"

debug.zip

When trying to remove chat prefixes like prefix-success or prefix-error from the language file (en_US.json), the prefix won't disappear but instead show "none" in chat. In previous versions like chatcontrol v10 the prefix would disappear as anticipated. Also putting something like &f doesn't work because it creates a blank space before the chat message.
en_US.json

"prefix-announce": "",
"prefix-error": "",
"prefix-info": "",
"prefix-question": "",
"prefix-success": "",
"prefix-warn": "",

Steps to reproduce

Install latest version of ChatControl (v11.0.4)
Try to remove prefixes from the lang file
Go ingame to see prefixes