FIX: Update OnScreenStick.cs

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -88,6 +88,11 @@ however, it has to be formatted properly to pass verification tests.
 - Expanded editor and build insight analytics to cover ``.inputactions` asset editor usage, `InputSettings` and common component configurations.
 - Added Input Setting option allowing to keep platform-specific scroll wheel input values instead of automatically converting them to a normalized range.
 
+## [Unreleased] - 2024-07-04
+
+### Fixed
+- Fixed memory leak when the OnScreenStick component was destroyed.
+
 ## [1.8.2] - 2024-04-29
 
 ### Added

Packages/com.unity.inputsystem/InputSystem/Plugins/OnScreen/OnScreenStick.cs

@@ -136,6 +136,15 @@ private void Start()
             image.alphaHitTestMinimumThreshold = 0.5f;
         }
 
+        private void OnDestroy()
+        {
+            if (m_UseIsolatedInputActions)
+            {
+                m_PointerDownAction.started -= OnPointerDown;
+                m_PointerDownAction.canceled -= OnPointerUp;
+            }
+        }
+
         private void BeginInteraction(Vector2 pointerPosition, Camera uiCamera)
         {
             var canvasRectTransform = UGUIOnScreenControlUtils.GetCanvasRectTransform(transform);