9p4
Please uninstall the plugin, delete the plugin folder, then restart Jellyfin. Do not delete the configuration. Then install the plugin.
Please refer to https://github.com/9p4/jellyfin-plugin-sso/issues/305 for Authelia issues.
I'll close this issue in a few weeks once everyone's upgraded to 10.11.
Marking as "wontfix" as this is a Jellyfin issue, not a plugin issue.
It should work like so: if you use `/start/` URLs, the generated redirect URL should be `/redirect/`. I'll look into why it isn't doing so, but It Works On My...
I think specifically if the oidc provider has never been logged into before, then the wrong redirect path is used when linking.