: Significant fixes have improved state retention in islands during development, preventing the full-page reloads that previously plagued island updates. Troubleshooting Checklist
If your "Fresh 4.0.4" issue persists, try these standard recovery steps: Fresh 4.0.4 fix
: You can create a file at routes/_404.tsx to define a custom UI for when users hit a non-existent URL. : Significant fixes have improved state retention in
: Common causes for unexpected 404s include mismatching case in URL paths or missing/extra trailing slashes, which Fresh handles strictly by default. Recent Release Fixes (Fresh 2.0+ Context) Fresh 4.0.4 fix
: In newer programmatic routing patterns, you can use the .notFound() method to ensure specific callbacks are triggered for every 404 error.