Fixed crash on duplicate GIProbe baking

core/object.h

@@ -111,6 +111,7 @@ enum PropertyUsageFlags {
 	PROPERTY_USAGE_CLASS_IS_ENUM = 1 << 18,
 	PROPERTY_USAGE_NIL_IS_VARIANT = 1 << 19,
 	PROPERTY_USAGE_INTERNAL = 1 << 20,
+	PROPERTY_USAGE_DO_NOT_SHARE_ON_DUPLICATE = 1 << 21, // If the object is duplicated also this property will be duplicated
 
 	PROPERTY_USAGE_DEFAULT = PROPERTY_USAGE_STORAGE | PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_NETWORK,
 	PROPERTY_USAGE_DEFAULT_INTL = PROPERTY_USAGE_STORAGE | PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_NETWORK | PROPERTY_USAGE_INTERNATIONALIZED,

scene/3d/gi_probe.cpp

@@ -535,7 +535,7 @@ void GIProbe::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::REAL, "normal_bias", PROPERTY_HINT_RANGE, "0,4,0.001"), "set_normal_bias", "get_normal_bias");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "interior"), "set_interior", "is_interior");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "compress"), "set_compress", "is_compressed");
-	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "data", PROPERTY_HINT_RESOURCE_TYPE, "GIProbeData"), "set_probe_data", "get_probe_data");
+	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "data", PROPERTY_HINT_RESOURCE_TYPE, "GIProbeData", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_DO_NOT_SHARE_ON_DUPLICATE), "set_probe_data", "get_probe_data");
 
 	BIND_ENUM_CONSTANT(SUBDIV_64);
 	BIND_ENUM_CONSTANT(SUBDIV_128);

scene/main/node.cpp

@@ -2169,7 +2169,16 @@ Node *Node::_duplicate(int p_flags, Map<const Node *, Node *> *r_duplimap) const
 				value = Array(value).duplicate();
 			}
 
-			current_node->set(name, value);
+			if (E->get().usage & PROPERTY_USAGE_DO_NOT_SHARE_ON_DUPLICATE) {
+
+				Resource *res = Object::cast_to<Resource>(value);
+				if (res) // Duplicate only if it's a resource
+					current_node->set(name, res->duplicate());
+
+			} else {
+
+				current_node->set(name, value);
+			}
 		}
 	}