Browser MCP: Hide/Show toggle button can only hide, not show

Bug Description

When using Playwright MCP browser tools, the Hide/Show Browser toggle button at the bottom of the tool call list is unreliable — it can hide the browser panel but clicking it again does not show it back.

Steps to Reproduce

1. Use any browser MCP tool (e.g., browser_navigate, browser_click, etc.)
2. The browser panel appears with tool call results and a "Hide Browser" button
3. Click "Hide Browser" — the panel hides successfully
4. Click "Show Browser" — nothing happens, the panel does not reappear

Expected Behavior

Clicking the toggle button should reliably show/hide the browser panel in both directions.

Actual Behavior

The button only works for hiding. Once hidden, the browser panel cannot be shown again via the toggle.

Screenshot

!screenshot

<!-- Screenshot shows the Playwright MCP tool calls list with Hide Browser button -->

Environment

• Claude Code CLI (macOS)
• Playwright MCP server