When I try to use #setPlayerListName on a Player, it just simply doesn't get triggered.
The "playerlist" / "tablist" doesn't get modified at all.
I've tried to do this:

player.setPlayerListName(plugin.rankshandler.getPrefix(aOnline) + " " + ChatColor.GOLD + player.getName().charAt(0) + ChatColor.YELLOW + player.getName().substring(1, player.getName().length()));

But the playerlist remains the same as before.

Yes, I'm a 100% sure that the method is being called properly.