diff --git a/src/Pools/EcsPool.cs b/src/Pools/EcsPool.cs
index bca9c8c..964c20f 100644
--- a/src/Pools/EcsPool.cs
+++ b/src/Pools/EcsPool.cs
@@ -100,7 +100,7 @@ namespace DCFApixels.DragonECS
             if (_isLocked) { EcsPoolThrowHelper.ThrowPoolLocked(); }
 #elif DRAGONECS_STABILITY_MODE
             if (itemIndex > 0) { return ref Get(entityID); }
-            if (_isLocked) { return ref _items[0]; }
+            if (_isLocked || _source.IsUsed(entityID) == false) { return ref _items[0]; }
 #endif
             if (_recycledItemsCount > 0)
             {
diff --git a/src/Pools/EcsTagPool.cs b/src/Pools/EcsTagPool.cs
index 64aa373..8f84bd9 100644
--- a/src/Pools/EcsTagPool.cs
+++ b/src/Pools/EcsTagPool.cs
@@ -108,7 +108,7 @@ namespace DCFApixels.DragonECS
             if (Has(entityID)) { EcsPoolThrowHelper.ThrowAlreadyHasComponent<T>(entityID); }
             if (_isLocked) { EcsPoolThrowHelper.ThrowPoolLocked(); }
 #elif DRAGONECS_STABILITY_MODE
-            if (Has(entityID) || _isLocked) { return; }
+            if (Has(entityID) || _source.IsUsed(entityID) == false || _isLocked) { return; }
 #endif
             _count++;
             _mapping[entityID] = true;