Staff cannot delete groups that they are not admin/owner of!

[madscientist032]

I was trying to go through my Groups list and delete a number of groups that were either from banned players or were used for malice and other abuse. I want to do /group delete however I cannot as I am not a member of these groups.

For example:

If I execute the command:
/group delete griefteamasdf

I get this in my in-game chat (this does not show up in any console logs (bungee nor paper):
[MC] Sorry you aren't a member of group: griefteamasdf
[MC] Incorrect command usage, use /group to see a list of commands!

You can reproduce this issue by creating a group as an alternate account and then having a staff/OP personnel try to delete the aforementioned group.

Server stats below:

OS: Windows Server 2016
I have seen this happen under Ubuntu Linux 20.04.1 LTS as well.

$ java -version
java version "1.8.0_271"
Java(TM) SE Runtime Environment (build 1.8.0_271-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.271-b09, mixed mode)

> version multichat
[15:02:22 INFO]: MultiChat version 1.10
[15:02:22 INFO]: Author: Revilo410

Waterfall version:
Running build waterfall-1.16-389.jar
[23:13:32] [main/INFO]: Enabled Waterfall version git:Waterfall-Bootstrap:1.16-R0.4-SNAPSHOT:68e87a8:389

> icanhasbukkit
[15:02:36 INFO]: This server is running Paper version git-Paper-396 (MC: 1.16.4) (Implementing API version 1.16.4-R0.1-SNAPSHOT)
[15:02:36 INFO]: Checking version, please wait...
[15:02:36 INFO]: Previous version: git-Paper-390 (MC: 1.16.4)