fix bug in merge up

Author: kingwingfly

CHANGELOG.md

@@ -12,17 +12,8 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 ## [0.15.1-beta.1] - 2025-01-23
 
 - this crate is ready, use beta SemVer
-
-## [0.15.1-alpha12] - 2025-01-23
-
 - fix a bug in merge up empty nodes
-
-## [0.15.1-alpha11] - 2025-01-23
-
 - multi-quadtree support: see `MultiQuadTreePlugin`
-
-## [0.15.1-alpha10] - 2025-01-23
-
 - fix doc mistakes
 
 ## [0.15.1-alpha9] - 2025-01-22

bevy_quadtree/src/tree/quad_tree.rs

@@ -96,6 +96,7 @@ impl<
     pub(crate) fn remove(&self, entity: &Entity) {
         if let Some(id) = self.entities.write().remove(entity) {
             self.tree.remove(id, entity);
+            self.tree.merge_up(id);
         }
     }
 

bevy_quadtree/src/tree/tree_impl.rs

@@ -207,7 +207,7 @@ impl<const N: usize, const D: usize, const W: usize, const H: usize, const K: us
         self[id].entities.write().remove(entity);
     }
 
-    fn merge_up(&self, id: NodeID) {
+    pub(crate) fn merge_up(&self, id: NodeID) {
         if !self[id].is_leaf() {
             return;
         }