Empty completion on BungeeCord

[Proximyst]

When using acf-bungee, on completion it suggests an empty argument when there are nothing but subcommands available; it includes all subcommands (as expected), but drops an empty string at the top.

For commands which are simply the root command and have completions set up with @Default, it works just fine:

[MrIvanPlays]

It has to do something with the @empty completion as I've seen weird behaviour of it at bungee.

EDIT: The problem is being this line of code. Unlike Bukkit, BungeeCord doesn't check for empty strings and so adds all completions no matter what they are.

[MrIvanPlays]

Instead of modifying ACF, I will make a PR in BungeeCord to prevent empty completions.