node-poweredup: Unable to connect multiple Hubs on Raspberry Pi 3 B v2

I am trying to connect multiple hubs on a Raspberry Pi 3 B v2. I’m using a cut down sample script to debug with no success:

const PoweredUP = require("node-poweredup");
const poweredUP = new PoweredUP.PoweredUP();
poweredUP.on("discover", async (hub) => {
    console.log(`Discovered ${hub.name}!`);
    await hub.connect();
    console.log(`Connected to ${hub.name}`);
});
poweredUP.scan();
console.log("Scanning for Hubs...");

The first device connects, but no more are detected:

root@rasp1:/home/pi/stash/lego-layout/apps/state# node ./dist/test.js
Scanning for Hubs...
Discovered Storage!
Connected to Storage

If I run the same thing on my Macbook I can connect to multiple devices:

$ node ./dist/test.js 
Scanning for Hubs...
Discovered Storage!
Discovered Tunnel Approac!
Connected to Storage
Connected to Tunnel Approac
Discovered Station Depart!
Discovered Station Approa!
Connected to Station Depart
Discovered Station!
Connected to Station Approa
Connected to Station

I have double checked that I have installed the correct dependencies on the Raspberry Pi.

I’m guessing this is a problem more with noble rather than node-poweredup - any suggestions?