To run

Start the frontend

cd frontend
yarn
yarn run dev

Start the backend

cd backend
yarn
yarn run dev

To reproduce issue where after a timeout without connecting to backend for a specific document, the hocuspocus provider ends up in a bad state.

1. Visit http://localhost:3000/other. Must be directly, don't visit / first.
2. Wait 3 seconds (the backend has been configured with timeout 3000).
3. Click the in page "Nav" link.
4. Websocket should now be in a bad state, any data entered won't be persisted.