How to resolve the issue of OnDestroy not being triggered in Unity?

In Unity, the OnDestroy method is automatically called when a game object is destroyed. If you find that the OnDestroy method is not being triggered, it could be due to a few reasons.

1. You have not correctly implemented the OnDestroy method: Make sure you have correctly implemented the OnDestroy method in your script. This method should be a function with no parameters and return values.
2. The script is not attached to the destroyed game object: Make sure that your script is properly attached to the game object that needs to be destroyed. You can check the list of components on the game object in the Unity editor to confirm if the script is correctly added.
3. When a script is disabled or destroyed, the order of method calls is unpredictable in Unity. The OnDestroy method may be called before or after other methods. Make sure your logic does not rely on the calling order of the OnDestroy method.
4. In Unity Editor’s play mode, the OnDestroy method may not be called if you stop the game while in play mode. You can test this by running the game and checking if OnDestroy is triggered correctly.

If you encounter an issue where the OnDestroy method is not triggering, please check the reasons listed above and troubleshoot them one by one. If the problem persists, you can try restarting the Unity editor or reimporting the script to resolve the issue.