React Native Bundler Bug?

[Stecken]

Description

I'm not sure what's going on. I spent the afternoon trying to figure out how to run a new React Native project at version 0.78.0. I simply created a new project using the following command:

npx @react-native-community/[email protected] init AwesomeProject --version 0.78.0

The project was created, and I was able to build it successfully. However, as soon as I ran the Metro bundler, the app displayed a black screen. I had to manually close the app and reopen it for anything to appear.

Steps to reproduce

1. First init a new project with npx @react-native-community/[email protected] init AwesomeProject --version 0.78.0
2. Run npm run android && npm run start
3. Await it to build, as soon as the app run close it, and open again manually.

React Native Version

0.78.0

Output of npx @react-native-community/cli info

System:
  OS: Linux 6.8 Ubuntu 24.04.2 LTS 24.04.2 LTS (Noble Numbat)
  CPU: (4) x64 Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz
  Memory: 11.77 GB / 31.28 GB
  Shell:
    version: 5.2.21
    path: /bin/bash
Binaries:
  Node:
    version: 18.18.0
    path: ~/.nvm/versions/node/v18.18.0/bin/node
  Yarn:
    version: 1.22.19
    path: /usr/bin/yarn
  npm:
    version: 10.8.3
    path: ~/.nvm/versions/node/v18.18.0/bin/npm
  Watchman:
    version: 20231224.093142.0
    path: /usr/local/bin/watchman
SDKs:
  Android SDK:
    API Levels:
      - "26"
      - "27"
      - "28"
      - "29"
      - "30"
      - "31"
      - "32"
      - "33"
      - "34"
      - "35"
    Build Tools:
      - 28.0.3
      - 30.0.2
      - 30.0.3
      - 31.0.0
      - 32.0.0
      - 33.0.0
      - 33.0.1
      - 34.0.0
      - 35.0.0
      - 35.0.1
    System Images:
      - android-26 | Intel x86 Atom
      - android-26 | Intel x86 Atom_64
      - android-26 | Google APIs Intel x86 Atom_64
      - android-27 | Intel x86 Atom
      - android-27 | Intel x86 Atom_64
      - android-28 | Intel x86 Atom
      - android-28 | Intel x86 Atom_64
      - android-28 | Google Play Intel x86 Atom
      - android-28 | Google Play Intel x86 Atom_64
      - android-35 | Google APIs Intel x86_64 Atom
    Android NDK: Not Found
IDEs:
  Android Studio: Not Found
Languages:
  Java:
    version: 11.0.26
    path: /usr/bin/javac
  Ruby:
    version: 3.2.3
    path: /usr/bin/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 15.0.1
    wanted: 15.0.1
  react:
    installed: 19.0.0
    wanted: 19.0.0
  react-native:
    installed: 0.78.0
    wanted: 0.78.0
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: Not found
  newArchEnabled: false

Screenshots and Videos

No response

[react-native-bot]

Warning

Missing reproducer: We could not detect a reproducible example in your issue report. Please provide either:

• If your bug is UI related: a Snack
• If your bug is build/upgrade related: a project using our Reproducer Template
• Otherwise send us a Pull Request with the RNTesterPlayground.js edited to reproduce your bug.

[dev-shubhambuccha]

Facing a similar issue on 0.71.8
The app crashes as soon as it opens.

[MikaelUW]

I having that same problem too.
The app didn't realy open, just a dark gray screen.

[dev-shubhambuccha]

Update: I tried turning off hermes and the app opens and works. But if i press R key to hard refresh app on metro it crashes but if i manually open it again its opens fine.