[Windows][App 26.901.4073.0] Precision touchpad two-finger scrolling no longer scrolls Codex

What version of the Codex App are you using?

26.901.4073.0

What subscription do you have?

ChatGPT Pro

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

After updating the Codex desktop app, two-finger scrolling on a Windows precision touchpad no longer scrolls the Codex interface/conversation viewport. The same two-finger gesture continues to scroll normally in other applications on the same computer, so the touchpad and operating-system gesture configuration are working.

The regression began immediately after the Codex app update. No error message is displayed; the scroll gesture is simply ignored by the Codex window.

What steps can reproduce the bug?

1. Install or update to Codex App 26.901.4073.0 on Windows 11 x64.
2. Open a Codex conversation whose content is taller than the visible viewport.
3. Place the pointer over the conversation and perform a vertical two-finger scroll gesture on the touchpad.
4. Observe that the conversation does not scroll.
5. Switch to another application, such as a browser, and repeat the same gesture.
6. Observe that two-finger scrolling works normally outside Codex.

What is the expected behavior?

Two-finger touchpad gestures should scroll the conversation and other scrollable Codex panes normally, just as mouse-wheel input and scrolling in other Windows applications do.

Additional information

This appeared after the same app update that also exposed stale project-sidebar recency ordering. The ordering behavior already matches #36300, so this report is limited to the separate touchpad-input regression. No exact existing issue for Windows two-finger touchpad scrolling was found before submission.

Reproduce on Windows 11 x64 with Codex App 26.901.4073.0 using a conversation taller than the viewport, then compare touchpad and mouse-wheel behavior in Codex and another application. The issue names no files, tests, or entry points; done means two-finger scrolling works in the conversation and other scrollable panes without regressing mouse-wheel scrolling.