I’ve posted my issue there but not sure if it was the right place:
https://community.openhab.org/t/oh3-with-nginx-reverse-proxy-and-auth-blank-page-when-reconnecting/131754
If anyone knows how to solve this, forcing my browser to load a ressource maybe?
I’m quite sure my configuration isn’t that unique.
For what I’ve understood, OH uses ServiceWorker and as it is cached locally, there is no resource request, except Web API call, which are not intercepted/redirected correctly by Vouch Proxy.