mDNS autodetect don't work on macos 15 sequoia

[RobertoD91]

Expected Behavior

With mDNS/Bonjour, I should automatically see devices at the bottom of the screen (see attached picture).

Current Behavior

On the left: Linux VM (network in bridge mode), autodetect works.

On the right: macOS 15.0, autodetect doesn't work.

Tested on macOS:

• Disabled firewall
• Tested both ExpressLRS Configurator 1.7.6 and ExpressLRS Configurator Nightlies v20240916.78234.0
• ping elrs_rx.local gives the correct IP of the RX
• Chrome accesses the elrs_rx.local webpage
• Multiple ELRS hardware tested
• Another software (mDNS-Explorer) found elrs_rx.local

Steps to Reproduce

1. Take an ELRS hardware and the SSID/password of home Wi-Fi.
2. Start Wi-Fi mode.
3. Open ExpressLRS Configurator.
4. Can't see devices in the bottom part.

Possible Solution (Not obligatory)

N/A

Context

N/A

Your Environment

• Operating System and version: macOS 15.0 24A335 Intel
• TX hardware: Radiomaster MT12 internal module and BetaFPV Micro 1W
• RX hardware: 3 different BetaFPV PWM receivers

[RobertoD91]

If I download the source code from Git and run it from the terminal, it works well...

[RobertoD91]

strange...

gh repo clone ExpressLRS/ExpressLRS-Configurator
cd ExpressLRS-Configurator/
node --version
yarn install --frozen-lockfile
yarn start
yarn build
npx update-browserslist-db@latest
yarn build
yarn electron-builder --publish never --x64 --mac
# runtime error, so i resigned...
codesign --force --deep --sign - release/mac/ExpressLRS\ Configurator.app
open release/mac/ExpressLRS\ Configurator.app

• built my self-signed version
• opened the self-built ExpressLRS Configurator
• a popup asked me if Electron can accept incoming connections
• the self-built ExpressLRS Configurator works fine; I closed it
• now, the release 1.7.6 ExpressLRS Configurator also works well

I suppose there is an issue with the integrated macOS firewall and the 1.7.6 release, maybe due to something about the code signing?