From 8fdebb85ef180c1e31e023c6b1a51cea683270a1 Mon Sep 17 00:00:00 2001
From: RedworkDE <10944644+RedworkDE@users.noreply.github.com>
Date: Tue, 21 Mar 2023 17:14:29 +0100
Subject: C#: Synchronize adding ScriptInstances

---
 modules/mono/csharp_script.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'modules/mono/csharp_script.cpp')

diff --git a/modules/mono/csharp_script.cpp b/modules/mono/csharp_script.cpp
index a12cac5a99..709e6d5fae 100644
--- a/modules/mono/csharp_script.cpp
+++ b/modules/mono/csharp_script.cpp
@@ -1533,7 +1533,10 @@ CSharpInstance *CSharpInstance::create_for_managed_type(Object *p_owner, CSharpS
 		instance->_reference_owner_unsafe();
 	}
 
-	p_script->instances.insert(p_owner);
+	{
+		MutexLock lock(CSharpLanguage::get_singleton()->get_script_instances_mutex());
+		p_script->instances.insert(p_owner);
+	}
 
 	return instance;
 }
-- 
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