WiFi.scan() returning 0 networks when no credentials present

Troubleshooting
1

I am basically using the standard implementation of WiFi.scan per the docs populating an array. When I’ve connected my device to a network using ‘particle serial wifi’ everything works fine and the scan returns 20 (size of array) networks. However, if I hold down the setup button and clear the credentials, then restart my device, then WiFi.scan() returns 0. Does having or not having credentials change the way scan works?

2

Photon device OS 1.0.1?
or
Argon device OS 0.9.0
or
anything else?

3

Photon v1.0.1 yep