diff --git a/packages/frontend/src/scripts/entity-manager.ts b/packages/frontend/src/scripts/entity-manager.ts
index e8a495607e..e28e5c2264 100644
--- a/packages/frontend/src/scripts/entity-manager.ts
+++ b/packages/frontend/src/scripts/entity-manager.ts
@@ -435,7 +435,10 @@ export class NoteManager {
         this.captureing.delete(id);
 
         // キャプチャが終わったらcomputedキャッシュも消してしまう
-        if (!noDeletion) this.notesComputed.delete(id);
+        if (!noDeletion) {
+            this.notesComputed.delete(id);
+            if (this.isDebuggerEnabled) console.log('NoteManager: decapture (delete computed)', id);
+        }
 	}
 
     /**