diff --git a/packages/flutter/lib/src/material/range_slider.dart b/packages/flutter/lib/src/material/range_slider.dart
index a0391cc1c2..99677cfff7 100644
--- a/packages/flutter/lib/src/material/range_slider.dart
+++ b/packages/flutter/lib/src/material/range_slider.dart
@@ -833,7 +833,6 @@ class _RenderRangeSlider extends RenderBox with RelayoutWhenSystemFontsChangeMix
       ..team = team
       ..onTapDown = _handleTapDown
       ..onTapUp = _handleTapUp
-      ..onTapCancel = _handleTapCancel
       ..gestureSettings = gestureSettings;
     _overlayAnimation = CurvedAnimation(
       parent: _state.overlayController,
@@ -1221,6 +1220,10 @@ class _RenderRangeSlider extends RenderBox with RelayoutWhenSystemFontsChangeMix
   }
 
   void _startInteraction(Offset globalPosition) {
+    if (_active) {
+      return;
+    }
+
     _state.showValueIndicator();
     final double tapValue = clampDouble(_getValueFromGlobalPosition(globalPosition), 0.0, 1.0);
     _lastThumbSelection = sliderTheme.thumbSelector!(textDirection, values, tapValue, _thumbSize, size, 0);
@@ -1333,10 +1336,6 @@ class _RenderRangeSlider extends RenderBox with RelayoutWhenSystemFontsChangeMix
     _endInteraction();
   }
 
-  void _handleTapCancel() {
-    _endInteraction();
-  }
-
   @override
   bool hitTestSelf(Offset position) => true;
 
diff --git a/packages/flutter/test/material/range_slider_test.dart b/packages/flutter/test/material/range_slider_test.dart
index 02a5cab358..be9b021f88 100644
--- a/packages/flutter/test/material/range_slider_test.dart
+++ b/packages/flutter/test/material/range_slider_test.dart
@@ -2540,4 +2540,45 @@ void main() {
       isNot(paints..circle(color: draggedColor)),
     );
   });
+
+   testWidgets('RangeSlider onChangeStart and onChangeEnd fire once', (WidgetTester tester) async {
+    // Regression test for https://github.com/flutter/flutter/issues/128433
+
+    int startFired = 0;
+    int endFired = 0;
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Directionality(
+          textDirection: TextDirection.ltr,
+          child: Material(
+            child: Center(
+              child: GestureDetector(
+                onHorizontalDragUpdate: (_) { },
+                child: RangeSlider(
+                  values: const RangeValues(40, 80),
+                  max: 100,
+                  onChanged: (RangeValues newValue) { },
+                  onChangeStart: (RangeValues value) {
+                    startFired += 1;
+                  },
+                  onChangeEnd: (RangeValues value) {
+                    endFired += 1;
+                  },
+                ),
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+
+    await tester.timedDragFrom(
+      tester.getTopLeft(find.byType(RangeSlider)),
+      const Offset(100.0, 0.0),
+      const Duration(milliseconds: 500),
+    );
+
+    expect(startFired, equals(1));
+    expect(endFired, equals(1));
+  });
 }
diff --git a/packages/flutter/test/widgets/list_wheel_scroll_view_test.dart b/packages/flutter/test/widgets/list_wheel_scroll_view_test.dart
index 2e6d8e6b4e..a762693219 100644
--- a/packages/flutter/test/widgets/list_wheel_scroll_view_test.dart
+++ b/packages/flutter/test/widgets/list_wheel_scroll_view_test.dart
@@ -1644,7 +1644,7 @@ void main() {
     });
 
     testWidgets('ListWheelScrollView does not crash and does not allow taps on children that were laid out, but not painted', (WidgetTester tester) async {
-      // Regression test for https://github.com/flutter/flutter/issues/12649
+      // Regression test for https://github.com/flutter/flutter/issues/126491
 
       final FixedExtentScrollController controller = FixedExtentScrollController();
       final List<int> children = List<int>.generate(100, (int index) => index);