From 19b182dd719b7bd404d3a5a2b7e9b82b871cd026 Mon Sep 17 00:00:00 2001
From: Relintai <relintai@protonmail.com>
Date: Wed, 18 Aug 2021 20:41:10 +0200
Subject: [PATCH] Don't build if not in tree.

---
 prop_instance_merger.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/prop_instance_merger.cpp b/prop_instance_merger.cpp
index 4da658d..c503803 100644
--- a/prop_instance_merger.cpp
+++ b/prop_instance_merger.cpp
@@ -495,6 +495,11 @@ void PropInstanceMerger::_build() {
 		return;
 	}
 
+	if (!is_inside_tree() || !get_world().is_valid()) {
+		queue_build();
+		return;
+	}
+
 	set_building(true);
 	_build_queued = false;