No - I did suspect Adguard, which intermediates http/s somehow (internal VPN I think?), but the issue still occurs with that disabled and shut down (& I've checked that the Adguard process isn't running).
No - I did suspect Adguard, which intermediates http/s somehow (internal VPN I think?), but the issue still occurs with that disabled and shut down (& I've checked that the Adguard process isn't running).