[msix-e2e-feedback] WinUI: trackpad two-finger scroll doesn't work in tray app on some devboxes

[indierawk2k2]

Repro

• OpenClaw Tray WinUI app installed (observed on the msix-e2e-test-build-2026-05-19 unsigned local MSIX).
• Open a scrollable surface in the tray (Settings, Chat, etc.).
• Try to scroll with the trackpad (two-finger gesture).

Expected
Scrolling works just like it does in Edge / Chrome / any other Win11 app on the same machine.

Actual
Trackpad scroll has no effect in the WinUI tray. Mouse wheel still works. Scrolling in the browser on the SAME devbox works fine, so it's not a machine-wide trackpad driver issue.

Notes
Observed during MSIX E2E manual test pass on a cloud devbox. Works fine on Mike's local dev box. Suggests a WinUI input-handling configuration difference the app needs to opt into — candidates: precision-touchpad input modes, ScrollViewer IsHorizontalScrollChainingEnabled / DirectManipulation settings, or a missing ScrollViewer.HorizontalScrollMode/VerticalScrollMode on the affected pages.

Found during MSIX-E2E manual test pass (Mike Harsh, 2026-05-19).

[copilot-swe-agent]

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[clawsweeper]

ClawSweeper status: review started.

I am starting a fresh review of this issue: [msix-e2e-feedback] WinUI: trackpad two-finger scroll doesn't work in tray app on some devboxes This is item 1/1 in the current shard. Shard 0/1.

This placeholder means the worker is alive and reading the current context. I will edit this same comment with the actual review when the claws are done clicking.

Crustacean status: shell secured, claws on keyboard, evidence pebbles being sorted.