Third person view. I tried reproducing it in a fresh project and the same thing happened.
Took a screenshot right after throwing the grenade. Unity 2020.3.22f1. Installed packs : UCC 2.44, BD, BD formations, BD Movement and BD Tactical (and the integration obviously). Other than this, everything else works great.
The log shows 4 errors, all the same :
A game object can only be in one layer. The layer needs to be in the range [0...31]
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Opsive.DeathmatchAIKit.Demo.Game.DeathmatchManager:SetupPlayer (UnityEngine.GameObject,int,int,int,int,UnityEngine.Color,UnityEngine.Color) (at Assets/Opsive/DeathmatchAIKit/Demo/Scripts/Game/DeathmatchManager.cs:437)
Opsive.DeathmatchAIKit.Demo.Game.DeathmatchManager:SceneLoaded () (at Assets/Opsive/DeathmatchAIKit/Demo/Scripts/Game/DeathmatchManager.cs:287)
Opsive.DeathmatchAIKit.Demo.Game.DeathmatchManager:SceneLoaded (UnityEngine.SceneManagement.Scene,UnityEngine.SceneManagement.LoadSceneMode) (at Assets/Opsive/DeathmatchAIKit/Demo/Scripts/Game/DeathmatchManager.cs:201)
UnityEngine.SceneManagement.SceneManager:Internal_SceneLoaded (UnityEngine.SceneManagement.Scene,UnityEngine.SceneManagement.LoadSceneMode)