Prohibit recalculateStats while changing class.

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java

@@ -2428,6 +2428,7 @@ public class PlayerInstance extends Playable
 		finally
 		{
 			_subclassLock = false;
+			getStat().recalculateStats(false);
 		}
 	}
 	
@@ -9597,6 +9598,7 @@ public class PlayerInstance extends Playable
 		finally
 		{
 			_subclassLock = false;
+			getStat().recalculateStats(false);
 		}
 	}
 	
@@ -9692,6 +9694,7 @@ public class PlayerInstance extends Playable
 		finally
 		{
 			_subclassLock = false;
+			getStat().recalculateStats(false);
 		}
 		
 		return addSubClass(newClassId, classIndex, isDualClass);
@@ -9969,6 +9972,7 @@ public class PlayerInstance extends Playable
 		finally
 		{
 			_subclassLock = false;
+			getStat().recalculateStats(false);
 		}
 	}
 	

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/stat/PlayerStat.java

@@ -683,6 +683,15 @@ public class PlayerStat extends PlayableStat
 		return (int) getValue(Stat.ARTIFACT_SLOTS, 0);
 	}
 	
+	@Override
+	public void recalculateStats(boolean broadcast)
+	{
+		if (!getActiveChar().isChangingClass())
+		{
+			super.recalculateStats(broadcast);
+		}
+	}
+	
 	@Override
 	protected void onRecalculateStats(boolean broadcast)
 	{