Bug Gamepad.current.SetMotorSpeeds() silently fails when called from Timer_Elapsed

Example:

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.InputSystem;
3. using System.Timers;
4.  
5. public class myBox: MonoBehaviour
6. {
7.    private Timer timer = new Timer(500);
8.    
9.    void Awake()
10.     {
11.        timer.Elapsed += timer_Elapsed;
12.        timer.Start();
13.     }
14.    
15.    private void timer_Elapsed(object sender, ElapsedEventArgs e)
16.     {
17.         Debug.Log("timer_Elapsed, Gamepad.current.SetMotorSpeeds(1f, 1f)");
18.         Gamepad.current.SetMotorSpeeds(1f, 1f);
19.     }
20. }
21.  

Expected behaviour:
The string "StopTimer_Elapsed, Gamepad.current.SetMotorSpeeds(1f, 1f)" is printed
Game pad vibration is activated

Actual behaviour:
The string "StopTimer_Elapsed, Gamepad.current.SetMotorSpeeds(1f, 1f)" is printed
Game pad vibration is NOT activated

Notes:
Not related to the game pad, the game pad vibration is activated as expected when the call to Gamepad.current.SetMotorSpeeds is made from other methods.

 

Version: 2019.4.18f1

 

I'm doing this in 2019.4.17f1 and it works:

Code (CSharp):

1.  
2.         var gamepad = Gamepad.current;
3.         if (gamepad != null) {
4.             gamepad.SetMotorSpeeds(0.25f, 0.75f);
5.             yield return new WaitForSeconds(0.1f);
6.             gamepad.SetMotorSpeeds(0, 0);
7.         }
8.