#4732 Lab issues page: toolbar overflows and clips controls when list pane narrows

Problem

On the Lab open issues page, the toolbar above the issue list does not scale with the list pane width.

• Pane wide: toolbar shows NEWEST sort, INSIGHTS, search field and + NEW. All fit.
• Pane narrow: toolbar does not wrap or shrink. It clips.
  • INSIGHTS is cut off.
  • Search field and + NEW are hidden or covered.
  • Filter chips row (Shipped x, Clear all) stays visible.

Steps to reproduce

1. Open the Lab issues page.
2. Apply a filter, for example Shipped.
3. Drag the divider between the list pane and the issue detail pane to narrow the list.

Expected

Toolbar reflows (wrap, collapse to icons, or overflow menu). No control is hidden or overlapped.

Actual

Fixed-width controls overflow. Search and + NEW become unreachable.

Also seen

Detail pane clips on the right. The labels row (PUBLIC), long title and PR link are cut off.

Environment

Date seen: 2026-11-13. Screenshots cannot be attached (see #4733).