From 357549c25c9b6b26749d6c91c916408e6a2b9c8a Mon Sep 17 00:00:00 2001
From: Michael Hsu <mike.hsu@gmail.com>
Date: Wed, 7 Dec 2022 13:11:19 -0800
Subject: [PATCH] call clear trackers on sub apps

see #6878
---
 crates/bevy_app/src/app.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crates/bevy_app/src/app.rs b/crates/bevy_app/src/app.rs
index da36f8fcf9717..1a82e04ec4ed6 100644
--- a/crates/bevy_app/src/app.rs
+++ b/crates/bevy_app/src/app.rs
@@ -96,6 +96,7 @@ impl SubApp {
     /// run the `SubApp`'s schedule
     pub fn run(&mut self) {
         self.app.schedule.run(&mut self.app.world);
+        self.app.world.clear_trackers();
     }
 
     /// extract data from main world to sub app