React Native using pre-bundled file on device, even if DEV-mode

Question

A few days ago, when I build and run my react native app from Xcode on a device, I realised that even if I set my scheme to Debug, the app is still loading from a pre-bundle

Answer 1

For me, I had accidentally clicked Deny instead of Allow on a macos popup asking whether to accept incoming network connections to «node».

Opening System Preferences -> Security & Privacy -> Firewall -> Firewall options, and finding the line for node that was set to block, then correcting it to allow solved my problem!