Umbrel not accessible when using global tailscale

Hey there,
I installed tailscale on my linux system that runs umbrel (with access to an exit node). After connecting I am not able to visit the umbrel dashboard anymore.

What doesnt work (all with a timeout):

  • browser requests from a pc in the tailscale network to umbrel
  • local curl request to localhost, umbrel.local, own ip (including all the IPs and addresses that are shown on umbrel startup)

What works:

  • ssh from a pc in the tailscale network to the umbrel server
  • ping from a pc in the tailscale network to the umbrel server
  • local ping localhost, umbrel.local, own ip and tailscale network IP (including all the IPs and addresses that are shown on umbrel startup)

I don’t run any ACLs on tailscale so the theory that web requests are blocked is not an issue. Also a local curl works only when tailscale is disconnected.

Does anybody have an idea or how to troubleshoot this?