new Tailscale issue?

[chirayuk]

WORKAROUND

In your web UI, set the "Pre-authentication Key" to "file:/dev/null".  This effectively works the same as not specifying an auth key and achieves what I described in my previous comment.

ps: Also check this Github issue: https://github.com/opnsense/plugins/issues/4661#issuecomment-3186000984