In fact I am having a problem, apparently due to the fact that I use Cloudflare ZeroTrust (inspired by your posts here 
) with Google Oauth. When the authentication expires I get a blank screen and have been unable to work out how to get it to reload in order to get redirected to the login page. See Add PWA Functionality by cgjgh · Pull Request #708 · FlowFuse/node-red-dashboard · GitHub
Ah, interesting! An unexpected interaction.
I wonder if there is anything generic (e.g. not limited to Google but common to OAuth) that the browser receives? If there is, then there could be an auto-redirect built into D2 where you could configure your redirect to login endpoint.
I've added this comment to your PR comment:
It sounds like the client code needs to have something that picks up a 401 response code from a client request and triggers a standard redirect to an endpoint defined in the D2 config.
