[Desktop] Browser pane: two-finger trackpad swipe does not navigate back (toolbar ← works)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report
• [ ] I am using the latest version of Claude Code (the desktop app bundles 2.1.289; latest CLI is 2.1.292)

What's Wrong?

In the Code tab's Browser pane, a two-finger horizontal swipe on the trackpad does not navigate back in history. The page has a back entry and the toolbar ← button navigates back correctly, so the history itself is fine; only the swipe gesture is not wired to navigation.

The swipe is delivered to the page as wheel events (a counter on the page increases while swiping), but no back navigation happens.

The same page and gesture navigate back in Safari, Chrome Beta, and the Codex desktop app's in-app browser on the same machine.

What Should Happen?

A two-finger swipe right on a page that has a back history entry should navigate back, as in Safari/Chrome (macOS "Swipe between pages"), or the pane's back button behavior should be reachable by the swipe gesture.

Error Messages/Logs

None.

Steps to Reproduce

1. Serve two static pages locally, e.g. python3 -m http.server 8766 --bind 127.0.0.1 in a folder with page1.html (linking to page2.html) and page2.html.
2. Open http://127.0.0.1:8766/page1.html in the Browser pane.
3. Click the link to page2.html. history.length is now 3.
4. Two-finger swipe right over the page.

• Actual: stays on page2.html. A wheel listener on the page receives the events.

1. Click the toolbar ←.

• Actual: goes back to page1.html (expected).

1. Repeat steps 2–4 in Safari, Chrome Beta, or the Codex desktop app's browser: the swipe goes back.

Minimal page used (page2 is the same with the link pointing to page1):

<!doctype html><meta charset="utf-8"><title>page 1</title>
<a href="page2.html">page2.html</a>
<p>history.length: <b id="len"></b></p>
<pre id="wheel">no wheel events</pre>
<script>
document.getElementById('len').textContent = history.length;
let n = 0, sx = 0;
addEventListener('wheel', e => { n++; sx += e.deltaX; document.getElementById('wheel').textContent = `count=${n} sumDeltaX=${Math.round(sx)}`; }, { passive: true });
</script>

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.289 (bundled with Claude desktop app 2.26454.0)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other (Claude desktop app, Code tab)

Additional Information

• macOS 15.7.7 (24G720), Apple Silicon. "Swipe between pages" is at its default (AppleEnableSwipeNavigateWithScrolls unset, i.e. two-finger swipe enabled).
• Use case: an MCP server opens a local review page in the Browser pane; users expect to move back and forth between its views with the same gesture they use in other browsers.

!by!Claude Code