I want my node to accept inbound IPv4 and Tor connections, but not make any outbound Tor connections. So I set:

listen=1
server=1
onlynet=ipv4
onion=x.x.x.x:9050
externalip=x.x.x.x
externalip=xxx.onion

I expect that onlynet will limit the outgoing connections to IPv4 only, and onion combined with externalip allow for Tor incoming connections.

Actual behavior

Tor gets completely disabled:

    {
      "name": "onion",
      "limited": true,
      "reachable": false,
      "proxy": "x.x.x.x:9050"
    }

Limited is true and reachable is false. Also it does not advertise the onion address, just the IPv4:

  "localaddresses": [
    {
      "address": "x.x.x.x",
      "port": 8333,
      "score": 270
    }
    ]

As soon as I remove the onlynet flag, Tor starts working and the address gets advertised.

It seems this behaviour is conflicting with the documentation (which state that onlynet affects outbound only).

So is this a bug and if not, how can I reach my goal of limiting outbound to non-tor addresses?