From f5f925fab36d1475bc11e72982f713b8c025a461 Mon Sep 17 00:00:00 2001
From: Ellpeck <me@ellpeck.de>
Date: Fri, 26 May 2023 23:08:45 +0200
Subject: [PATCH] fixed an exception when a panel that is not currently part of
 a ui has a child removed (since 3127ad5)

---
 MLEM.Ui/Elements/Panel.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/MLEM.Ui/Elements/Panel.cs b/MLEM.Ui/Elements/Panel.cs
index 6a22775..d523b17 100644
--- a/MLEM.Ui/Elements/Panel.cs
+++ b/MLEM.Ui/Elements/Panel.cs
@@ -136,7 +136,8 @@ namespace MLEM.Ui.Elements {
 
             // when removing children, our scroll bar might have to be hidden
             // if we don't do this before adding children again, they might incorrectly assume that the scroll bar will still be visible and adjust their size accordingly
-            this.ScrollSetup();
+            if (this.System != null)
+                this.ScrollSetup();
         }
 
         /// <inheritdoc />