Set fadeTime to 0 to fix most instances of the cursor getting stuck on iOS and FF Android.

src/components/virtual-gamepad-controls.js

@@ -16,12 +16,14 @@ AFRAME.registerComponent("virtual-gamepad-controls", {
 
     const leftStick = nipplejs.create({
       zone: leftTouchZone,
-      color: "white"
+      color: "white",
+      fadeTime: 0
     });
 
     const rightStick = nipplejs.create({
       zone: rightTouchZone,
-      color: "white"
+      color: "white",
+      fadeTime: 0
     });
 
     this.onMoveJoystickChanged = this.onMoveJoystickChanged.bind(this);