[Bug / UX] Kimi WebBridge agent navigation steals focus and overwrites the active tab

[grandmaster451]

[Bug / UX] Kimi WebBridge agent navigation steals focus and overwrites the active tab

Product

Kimi WebBridge browser extension + local daemon

Environment

• Browsers: Google Chrome latest stable, Microsoft Edge latest stable
• OS: macOS (likely all platforms)
• Setup: local agent mode via the official install script

Current behavior

When an agent asks WebBridge to open a URL, the extension currently navigates the active tab instead of opening a background tab. Commands that include newTab: true also open the new tab in the foreground, stealing focus from the user.

Expected behavior

Agent-driven navigation should open pages in a new, inactive background tab so the user can keep using the browser while the agent works.

Steps to reproduce

1. Open Chrome and focus any tab with content.
2. From a connected agent, send:

   {"action":"navigate","args":{"url":"https://example.com"}}

3. The active tab is navigated away to example.com, replacing the user's current page.

For newTab commands, the new tab opens with focus instead of staying in the background.

Impact

• Risk of losing unsaved state in the active tab.
• Constant interruption of the user's workflow.
• Unusable in Agent Swarm scenarios where multiple sub-agents open tabs concurrently.
• Feels intrusive despite the local-first architecture.

Suggested fix

1. Default all chrome.tabs.create calls to active: false for agent tabs.
2. Make navigate create a new inactive tab when no explicit target is provided, instead of reusing the active tab.
3. Optionally group agent tabs under a collapsible Kimi Agent group.
4. Clean up agent tabs when the session ends.

Why posted here

Kimi WebBridge itself does not appear to have a public issue tracker. I am posting this in the closest public Moonshot AI repository so other users can confirm the behavior and so the team has a public record to reference.

Related

• https://www.kimi.com/help/kimi-webbridge/kimi-webbridge-introduction
• https://www.kimi.com/zh-cn/features/webbridge