fix

com.unity.uiwidgets/Runtime/gestures/converter.cs

                             break;
 
                         case PointerChange.move: {
-                            Debug.LogError("need add synthesized into PointerData");
                             yield return new PointerMoveEvent(
                                 timeStamp: timeStamp,
                                 pointer: datum.pointerIdentifier,

com.unity.uiwidgets/Runtime/gestures/multitap.cs

 using Unity.UIWidgets.ui;
 
 namespace Unity.UIWidgets.gestures {
-    public delegate void GestureDoubleTapCallback(DoubleTapDetails details);
+    public delegate void GestureDoubleTapCallback();
 
     public delegate void GestureMultiTapDownCallback(int pointer, TapDownDetails details);
 
             tracker.entry.resolve(GestureDisposition.accepted);
             _freezeTracker(tracker);
             _trackers.Remove(tracker.pointer);
-            _checkUp(tracker);
+            _checkUp(tracker.initialButtons);
 
             _reset();
         }
             }
         }
 
-        void _checkUp(_TapTracker tracker) {
-            // D.assert(buttons == kPrimaryButton);
+        void _checkUp(int buttons) {
+            D.assert(buttons == gesture_.kPrimaryButton);
-                invokeCallback<object>("onDoubleTap", () => {
-                    onDoubleTap(new DoubleTapDetails(tracker._initialGlobalPosition));
-                    return null;
-                });
+                invokeCallback("onDoubleTap",() => onDoubleTap);
             }
         }
 

com.unity.uiwidgets/Runtime/rendering/editable.cs

             _doubleTap = new DoubleTapGestureRecognizer(this);
             _tap.onTapDown = _handleTapDown;
             _tap.onTap = _handleTap;
-            _doubleTap.onDoubleTap = _handleDoubleTap;
             _longPress = new LongPressGestureRecognizer(debugOwner: this);
             _longPress.onLongPress = _handleLongPress;