## Bug: Scrolling Not Working for Synaptics Touchpad in WinUI 3

[m-asadullah]

Bug: Scrolling Not Working for Synaptics Touchpad in WinUI 3

Summary:
Scrolling via Synaptics Touchpad does not work in WinUI 3 applications, but works correctly in WinUI 2/UWP apps.

Hardware & Environment Details

Category	Field	Details
System Info	Edition	Windows 11 Pro
	System Type	64‑bit operating system, x64‑based processor
	Pen & Touch	No pen or touch input available for this display
	Input Method	Two‑finger scroll, edge scroll
Touchpad Device	Device Name	Synaptics LuxPad V1.3 on SMB Port
	Driver Version	19.0.19.63
	Firmware Version	1.3
	Interface	SMB

Description

When using a Synaptics Touchpad, scroll gestures (two‑finger vertical/horizontal scroll, edge scroll) do not work in WinUI 3 apps.
The same gestures work as expected in WinUI 2/UWP apps on the same hardware and OS.

Expected Behavior

Scrolling gestures on the Synaptics Touchpad should work in WinUI 3 apps exactly as they do in WinUI 2/UWP apps.

Actual Behavior

• No scrolling occurs when using touchpad gestures in WinUI 3 apps.
• Mouse wheel scrolling works normally.
• No relevant errors appear in Event Viewer.

Steps to Reproduce

1. Open a WinUI 3 app with a ScrollViewer or other scrollable content.
2. Attempt to scroll using Synaptics Touchpad gestures.
3. Observe that no scrolling occurs.
4. Repeat the same steps in a WinUI 2/UWP app — scrolling works.

Additional Notes

• The touchpad is recognized as a Precision Touchpad in Windows settings.
• Issue may be related to pointer event handling differences between WinUI 2/UWP and WinUI 3.
• Reproducible on multiple devices with Synaptics hardware.

Originally posted by @m-asadullah in microsoft/WindowsAppSDK#4710 (comment)

[torum]

This may be related to microsoft-ui-xaml #2482. They closed the issue without fixing it. I commented back then but there were no reply.

[m-asadullah]

The new released of WindowsAppSDK 1.8.250907003, now the scroll properly working on WinUI 3.

✅ Closing Note – Resolved in WindowsAppSDK 1.8.250907003

🎉Happy to confirm that the reported issue — scrolling not working with Synaptics Touchpad in WinUI 3 applications — has been resolved with the release of WindowsAppSDK 1.8.250907003.

With this update:

• Two‑finger vertical and horizontal scrolling now works as expected in WinUI 3 apps.
• Edge scrolling gestures are properly recognized.
• Behavior is now consistent with WinUI3/WinUI2/UWP applications on the same hardware and OS.

This fix addresses the pointer event handling differences that previously prevented Synaptics touchpad gestures from functioning correctly.

This issue is opened for WindowsAppSDK 1.7.+ before the stable release of 1.8.+ now closing the issue as it is resolved in release 1.8.250907003.

🔗 Action: Please update to WindowsAppSDK 1.8.250907003 to benefit from this fix.

Thank you to developers and contributors for making WinUI3/WindowsAppSDK better with every release!