It's possible to loose the saved document when waiting long enough

When staying in edit mode for long enough for the session to be invalidated and saving you will get redirected to the OIDC provider and back to XWiki quickly but in the meantime the saved content will be lost.

To work around that we would need to serialize the request before the first redirect and restore it when going back to XWiki. That's what MyFormAuthenticator is doing for example.