Crashes when browser storage is blocked

[richardkall]

Reproduction

Easiest way to reproduce it is visiting https://reactrouter.com since it has the same issue.

1. Block all storage in your browser settings (cookies etc.)
2. Visit reactrouter.com
3. Navigate to "Docs"
4. Page breaks with SecurityError: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document.

Seems to be linked to scroll restoration, but removing doesn't fix the issue for me. For us this is a real issue in production for users blocking storage in their devices.

System Info

System:
    OS: macOS 15.6.1
    CPU: (10) arm64 Apple M2 Pro
    Memory: 746.00 MB / 32.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.19.0 - ~/.local/state/fnm_multishells/36228_1757592307826/bin/node
    Yarn: 1.22.22 - /opt/homebrew/bin/yarn
    npm: 10.9.3 - ~/.local/state/fnm_multishells/36228_1757592307826/bin/npm
    pnpm: 10.15.1 - /opt/homebrew/bin/pnpm
    bun: 1.2.21 - /opt/homebrew/bin/bun
  Browsers:
    Chrome: 139.0.7258.155
    Edge: 140.0.3485.54
    Safari: 18.6
  npmPackages:
    @react-router/dev: 7.8.2 => 7.8.2 
    @react-router/express: 7.8.2 => 7.8.2 
    @react-router/node: 7.8.2 => 7.8.2 
    react-router: 7.8.2 => 7.8.2 
    vite: 7.1.5 => 7.1.5

Used Package Manager

yarn

Expected Behavior

Page not crashing.

Actual Behavior

Page crashes with an error.

[v7]

I'm encountering the same problem, and Sentry is full of bug reports related to this issue.

[github-actions]

🤖 Hello there,

We just published version 7.9.2-pre.0 which involves this issue. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 7.9.2 which involves this issue. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!