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## What Import `react-data-grid/lib/styles.css` in `SpreadsheetImportTable`, the single component that renders the import grid (used by the Validate Data and Select Header steps). ## Why The React 19 migration (#21531) bumped `react-data-grid` from `7.0.0-beta.13` to `7.0.0-beta.59`. The old beta auto-injected its layout CSS; beta.59 ships it as a separate `react-data-grid/lib/styles.css` export that must be imported manually. It was never imported, so the grid lost its base layout (grid template, row heights, cell positioning): rows stacked at full height and columns no longer aligned. The library scopes its styles under `@layer rdg`, so the existing Linaria theme overrides still take precedence. <!-- This is an auto-generated description by cubic. --> <a href="https://cubic.dev/pr/twentyhq/twenty/pull/21867?utm_source=github" target="_blank" rel="noopener noreferrer" data-no-image-dialog="true"><picture><source media="(prefers-color-scheme: dark)" srcset="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"><source media="(prefers-color-scheme: light)" srcset="https://www.cubic.dev/buttons/review-in-cubic-light.svg"><img alt="Review in cubic" src="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"></picture></a> <!-- End of auto-generated description by cubic. --> ## Before <img width="2540" height="1448" alt="CleanShot 2026-06-19 at 17 43 58@2x" src="https://github.com/user-attachments/assets/a208b518-9088-4988-8245-4fdc4f8bc8de" /> ## After <img width="2454" height="1392" alt="CleanShot 2026-06-19 at 18 02 36@2x" src="https://github.com/user-attachments/assets/e0b30d71-8244-4363-86aa-60b12a2dfdd9" />