Core: Fix panel overflowing issue

[ghengeveld]

Copy of #33450

What I did

Checklist for Contributors

Testing

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Manual testing

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• Add or update documentation reflecting your changes
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  MIGRATION.MD

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  • bug: Internal changes that fixes incorrect behavior.
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  • dependencies: Upgrading (sometimes downgrading) dependencies.
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Summary by CodeRabbit

• Refactor
  • Reorganized internal layout structure for improved modularity and responsiveness while maintaining compatibility.

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☁️ Nx Cloud last updated this comment at 2026-01-17 20:30:03 UTC

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☁️ Nx Cloud last updated this comment at 2026-01-17 15:37:56 UTC

[coderabbitai]

📝 Walkthrough

Walkthrough

The Layout component's internal structure was refactored from a grid-based composition to a flex-based layout. A new ContentPanelWrapper encapsulates panel and content areas, and the sidebar now uses inline styling instead of grid configuration. Panel rendering logic was moved and repositioned within the hierarchy with added PanelSlot wrapper management.

Changes

Cohort / File(s)

Summary

Layout component restructuring code/core/src/manager/components/layout/Layout.tsx

Replaced grid-based layout declarations with flex-based composition; introduced ContentPanelWrapper and PanelSlot styled components; moved panel rendering into ContentPanelWrapper; changed sidebar width to inline style; adjusted conditional rendering for pages and main content; updated PanelContainer to use inline dimensions based on panelPosition; removed explicit isDragging propagation through LayoutContainer.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• UI: Keep preview frame stable in overall layout #33447: Modifies Layout.tsx's layout composition and conditional rendering/placement of PanelContainer with similar structural changes to panel rendering logic.

✨ Finishing touches

• 📝 Generate docstrings

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[storybook-app-bot]

Package Benchmarks

^{Commit: 01bcc3f, ran on 17 January 2026 at 15:45:55 UTC}

The following packages have significant changes to their size or dependencies:

@storybook/react-native-web-vite

	Before	After	Difference
Dependency count	159	159	0
Self size	30 KB	30 KB	🚨 +8 B 🚨
Dependency size	23.00 MB	23.12 MB	🚨 +115 KB 🚨
Bundle Size Analyzer	Link	Link

@storybook/cli

	Before	After	Difference
Dependency count	183	183	0
Self size	775 KB	775 KB	🚨 +139 B 🚨
Dependency size	67.38 MB	67.45 MB	🚨 +69 KB 🚨
Bundle Size Analyzer	Link	Link

@storybook/codemod

	Before	After	Difference
Dependency count	176	176	0
Self size	30 KB	30 KB	🎉 -4 B 🎉
Dependency size	65.95 MB	66.02 MB	🚨 +69 KB 🚨
Bundle Size Analyzer	Link	Link