[1.10.2] Client command bug?

package stevekung.mods.indicatorutils.command;

import java.util.Collections;

import java.util.List;

import net.minecraft.client.Minecraft;

import net.minecraft.command.CommandBase;

import net.minecraft.command.CommandException;

import net.minecraft.command.ICommandSender;

import net.minecraft.command.WrongUsageException;

import net.minecraft.server.MinecraftServer;

import net.minecraft.util.math.BlockPos;

import net.minecraft.util.text.ITextComponent;

import net.minecraft.util.text.TextComponentString;

import net.minecraft.util.text.TextComponentTranslation;

import stevekung.mods.indicatorutils.IndicatorUtilsEventHandler;

import stevekung.mods.indicatorutils.utils.JsonMessageUtils;

import stevekung.mods.indicatorutils.utils.helper.GameInfoHelper;

public class CommandAFK extends CommandBase

{

    @Override

    public int getRequiredPermissionLevel()

    {

        return 0;

    }

    @Override

    public String getCommandUsage(ICommandSender sender)

    {

        return "commands.afk.usage";

    }

    @Override

    public String getCommandName()

    {

        return "afk";

    }

    @Override

    public void execute(MinecraftServer server, ICommandSender sender, String[] args) throws CommandException

    {

        if (args.length == 1)

        {

            if ("stop".equals(args[0]))

            {

                if (IndicatorUtilsEventHandler.afkEnabled == true)

                {

                    IndicatorUtilsEventHandler.afkEnabled = false;

                    Minecraft.getMinecraft().thePlayer.sendChatMessage("I'm back! AFK Time is : " + GameInfoHelper.INSTANCE.ticksToElapsedTime(IndicatorUtilsEventHandler.afkTick / 2) + " minutes");

                    return;

                }

                else

                {

                    Minecraft.getMinecraft().thePlayer.addChatMessage(JsonMessageUtils.textToJson("You have not start using /afk command", "red"));

                    return;

                }

            }

        }

        if (args.length >= 2)

        {

            if ("start".equals(args[0]))

            {

                if (IndicatorUtilsEventHandler.afkEnabled == false)

                {

                    ITextComponent component = this.getChatComponentFromNthArg(args, 1);

                    TextComponentTranslation textcomponent = new TextComponentTranslation("commands.afk.reason", new Object[] { component.createCopy() });

                    String test = textcomponent.getUnformattedText();

                    IndicatorUtilsEventHandler.afkEnabled = true;

                    IndicatorUtilsEventHandler.afkReason = test;

                    Minecraft.getMinecraft().thePlayer.sendChatMessage("AFK for now");

                    return;

                }

                else

                {

                    Minecraft.getMinecraft().thePlayer.addChatMessage(JsonMessageUtils.textToJson("You have already start /afk command", "red"));

                    return;

                }

            }

        }

        throw new WrongUsageException("commands.afk.usage");

    }

    @Override

    public List getTabCompletionOptions(MinecraftServer server, ICommandSender sender, String[] args, BlockPos pos)

    {

        if (args.length == 1)

        {

            return CommandBase.getListOfStringsMatchingLastWord(args, "start", "stop");

        }

        return Collections.<String>emptyList();

    }

    public ITextComponent getChatComponentFromNthArg(String[] args, int index)

    {

        ITextComponent itextcomponent = new TextComponentString("");

        for (int i = index; i < args.length; ++i)

        {

            if (i > index)

            {

                itextcomponent.appendText(" ");

            }

            ITextComponent itextcomponent1 = net.minecraftforge.common.ForgeHooks.newChatWithLinks(args);

            itextcomponent.appendSibling(itextcomponent1);

        }

        return itextcomponent;

    }

}

    @EventHandler

    public void init(FMLInitializationEvent event)

    {

        if (ConfigManager.mojangStatusCheckOnStartup)

        {

            IULog.info("Checking Mojang Status on startup");

            new ThreadMojangStatusCheck(true).start();

        }

        MinecraftForge.EVENT_BUS.register(new IndicatorUtilsEventHandler());

        MinecraftForge.EVENT_BUS.register(this);

        if (event.getSide() == Side.CLIENT)

        {

            ClientCommandHandler.instance.registerCommand(new CommandGetPlayerPosition());

            ClientCommandHandler.instance.registerCommand(new CommandIndicatorUtils());

            ClientCommandHandler.instance.registerCommand(new CommandMojangStatusCheck());

            ClientCommandHandler.instance.registerCommand(new CommandAFK());

            ClientCommandHandler.instance.registerCommand(new CommandRecTemp());

            ClientCommandHandler.instance.registerCommand(new CommandEntityDetector());

        }

    }