From 7048e01ceb3aaaea35dcfe0b324c3ca146e1856f Mon Sep 17 00:00:00 2001
From: eugineerd <evd.jeka@gmail.com>
Date: Wed, 9 Jul 2025 19:53:30 +0000
Subject: [PATCH] avoid copying when `deferred_clone_component_ids` is empty

---
 crates/bevy_ecs/src/entity/clone_entities.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/crates/bevy_ecs/src/entity/clone_entities.rs b/crates/bevy_ecs/src/entity/clone_entities.rs
index 5df3658d3f..ee2b30ba7f 100644
--- a/crates/bevy_ecs/src/entity/clone_entities.rs
+++ b/crates/bevy_ecs/src/entity/clone_entities.rs
@@ -661,8 +661,12 @@ impl EntityCloner {
             let mut source_entity = world.entity_mut(source);
 
             // Remove all cloned components with drop by concatenating both vectors
-            deferred_cloned_component_ids.extend(&bundle_scratch.component_ids);
-            source_entity.remove_by_ids(&deferred_cloned_component_ids);
+            if deferred_cloned_component_ids.is_empty() {
+                source_entity.remove_by_ids(&bundle_scratch.component_ids);
+            } else {
+                deferred_cloned_component_ids.extend(&bundle_scratch.component_ids);
+                source_entity.remove_by_ids(&deferred_cloned_component_ids);
+            }
 
             let table_row = source_entity.location().table_row;