From 7c554cd461b8051aabbd0ea23738430e896cd32b Mon Sep 17 00:00:00 2001
From: sekwah41 <alastair.hawkes@gmail.com>
Date: Fri, 2 Feb 2018 09:39:11 +0000
Subject: [PATCH] Fixing the concurrency issue

---
 .../advancedportals/core/commands/CommandWithSubCommands.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/com/sekwah/advancedportals/core/commands/CommandWithSubCommands.java b/src/com/sekwah/advancedportals/core/commands/CommandWithSubCommands.java
index a54cc0c1..82554a29 100644
--- a/src/com/sekwah/advancedportals/core/commands/CommandWithSubCommands.java
+++ b/src/com/sekwah/advancedportals/core/commands/CommandWithSubCommands.java
@@ -144,7 +144,7 @@ public class CommandWithSubCommands implements CommandTemplate {
     }
 
     public List<String> filterTabResults(List<String> tabList, String lastArg) {
-        for(String arg : tabList) {
+        for(String arg : tabList.toArray(new String[0])) {
             if(!arg.startsWith(lastArg.toLowerCase())) {
                 tabList.remove(arg);
             }