Add Port Forward not showing all devices

The Add Port Forward form was showing only two devices even though there's around 50 on my network.

After lots of experimenting, I found a device with a very long name (~60 characters).

When I started editing that device's name, the app warned me that the name was too long.

After I renamed the device to have a shorter name, the Add Port Forward form started showing all devices.

So, the Add Port Forward form seems to have a bug: if any device has a name that's too long, the Add Port Forward form doesn't work right.