From 7aafdadae51fcffd9dba27c2e91661b6248f3c47 Mon Sep 17 00:00:00 2001
From: Regalis <regalis@undertowgames.com>
Date: Fri, 24 Feb 2017 19:16:42 +0200
Subject: [PATCH] (Maybe?) fixed "collection was modified" exceptions in
 GUIComponent.AddToGUIUpdateList

http://undertowgames.com/forum/viewtopic.php?f=21&t=5915
Couldn't reproduce the exception and not sure why exactly it happens, but I think this should prevent it
---
 Subsurface/Source/GUI/GUIComponent.cs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Subsurface/Source/GUI/GUIComponent.cs b/Subsurface/Source/GUI/GUIComponent.cs
index f48325221..b059c8267 100644
--- a/Subsurface/Source/GUI/GUIComponent.cs
+++ b/Subsurface/Source/GUI/GUIComponent.cs
@@ -28,7 +28,12 @@ namespace Barotrauma
             if (!Visible) return;
             if (ComponentsToUpdate.Contains(this)) return;
             ComponentsToUpdate.Add(this);
-            children.ForEach(c => c.AddToGUIUpdateList());
+
+            List<GUIComponent> fixedChildren = new List<GUIComponent>(children);
+            foreach (GUIComponent c in fixedChildren)
+            {
+                c.AddToGUIUpdateList();
+            }
         }
 
         public static void ClearUpdateList()