src/de/steamwar/bungeecore/commands/WhoisCommand.java

@@ -107,7 +107,7 @@ public class WhoisCommand extends SWCommand {
         if(!user.getActiveMods().isEmpty()) {
             Message.send("WHOIS_ACTIVE_MODS",player);
             for(Mod mod : user.getActiveMods())  {
-                Message.sendPrefixless("WHOIS_ACTIVE_MOD", player,mod.getModName());
+                Message.send("WHOIS_ACTIVE_MOD", player,mod.getModName());
             }
         }else {
             Message.send("WHOIS_NO_ACTIVE_MODS",player);

src/de/steamwar/bungeecore/listeners/mods/Fabric.java

@@ -89,7 +89,7 @@ public class Fabric extends BasicListener {
         }
         Storage.fabricExpectPluginMessage.remove(player);
 
-        List<Mod> mods = new LinkedList<>();
+        ArrayList<Mod> mods = new ArrayList<>();
 
         Utils.VarInt varInt = Utils.readVarInt(data,0);
 
@@ -127,6 +127,8 @@ public class Fabric extends BasicListener {
             return;
         }
 
+        user.setActiveMods(mods);
+
         if(Utils.handleMods(player,mods)) {
             if (Storage.fabricCheckedPlayers.containsKey(player)) {
                 long current = Storage.fabricCheckedPlayers.get(player);
@@ -139,7 +141,6 @@ public class Fabric extends BasicListener {
                 Storage.fabricCheckedPlayers.put(player, dataString.hashCode());
             }
             Storage.fabricPlayers.remove(player);
-            user.setActiveMods(mods);
         }
     }
 
@@ -164,7 +165,6 @@ public class Fabric extends BasicListener {
 
     public static void remove(ProxiedPlayer player) {
         Storage.fabricCheckedPlayers.remove(player);
-        SteamwarUser.get(player.getUniqueId()).setActiveMods(new LinkedList<>());
         synchronized (Storage.fabricExpectPluginMessage) {
             Storage.fabricExpectPluginMessage.remove(player);
         }

src/de/steamwar/bungeecore/sql/SteamwarUser.java

@@ -39,6 +39,7 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Timestamp;
 import java.util.*;
+import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.logging.Level;
 import java.util.stream.Collectors;
 
@@ -80,7 +81,7 @@ public class SteamwarUser {
     private Locale locale;
     private boolean manualLocale;
 
-    private List<Mod> activeMods = new LinkedList<>();
+    private List<Mod> activeMods = new CopyOnWriteArrayList<>();
 
     static {
         try {
@@ -396,8 +397,11 @@ public class SteamwarUser {
     }
 
     public void setActiveMods(List<Mod> activeMods) {
-        this.activeMods = activeMods;
+        this.activeMods.clear();
+        this.activeMods.addAll(activeMods);
     }
 
-    public List<Mod> getActiveMods() {return this.activeMods;}
+    public List<Mod> getActiveMods() {
+        return new ArrayList<>(activeMods);
+    }
 }