Type of bug

Other unexpected behaviour

/ess dump all output

https://essentialsx.net/dump.html?id=4204f55e10c34431b0cd83451beda173

Error log (if applicable)

No response

Bug description

I use the nickname of Ken on my server. My actual username is "lecraeman". I have all the tab completion and command usage setup to respect nicknames in Essentials. It works almost all the time. However, I've run into an issue lately. Two users have gotten on that have broken the system.

One is named "MushuAwakens" and the other "DuckenEnjoyer". Whenever either is on, if anyone uses "/msg Ken" (Or any other essential commands - it routes to one of them, rather than me. I assume this has to do with the fact that "Ken" is in their actual username.

I even tried giving them nicknames that DID NOT contain "ken" and it still happens. Not entirely sure what is causing this, but I keep executing commands on these players that I intend to execute on myself. I can get around this by using my actual username, but because I have essentials commands setup to tab complete nicknames, that makes this a lot harder.

I am guessing this is some sort of breakage with how essentials tries to find an online player, even if you don't enter a fullname.

Steps to reproduce

1. Run essentials and give short nickname (Like Ken).
2. Have user get on with that nickname in their name (Doesn't seem to matter about capitalization at all - ex "MushuAwakens".
3. Do /msg Ken (Or any other essentials command).
4. Command is executed at the user with the full name, rather than the user with the actual nickname of "ken".

Expected behaviour

Commands should route to the user with the nickname "Ken" if entered exactly.

Actual behaviour

Commands route to a user with the nickname WITHIN their username. Ex, Nickname --> Ken , routes to --> MushuAwakens.