I run the latest version of the plugin on latest Paper 1.20.1.
There aren't any errors in the console.

My prefixes aren't showing the correct colors. Here's what I mean by that.

Here's my configuration for the Owner rank:
Groups:

  Owner:
    Permission: nte.owner
    Prefix: '&r &8» &c'
    Suffix: ''
    SortPriority: 2000

Here's what it's supposed to look like - and it shows just fine in the group list:

And here's what it actually looks like above my head:

The "&c" at the end of the Prefix seems to be affecting the front portion of the prefix. I'm not sure what could cause this.
I use a custom resource pack for the prefixes, could this be an issue? And if so, how could I go about fixing it?

Thanks.

It fixed itself.