Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already report this problem, without success.

Ionic Framework Version

v8.x

Current Behavior

When creating a new app using the CLI, using angular standalone, run npm start, nothing is shown in the browser and the console shows this error:

core.mjs:7397 ERROR NotFoundError: Failed to execute 'insertBefore' on 'Node': The node before which the new node is to be inserted is not a child of this node.
    at addStyle (index.js:858:34)
    at attachStyles (index.js:887:20)
    at index.js:1705:5
    at Generator.next (<anonymous>)
    at asyncGeneratorStep (asyncToGenerator.js:3:1)
    at _next (asyncToGenerator.js:17:1)
    at asyncToGenerator.js:22:1
    at new ZoneAwarePromise (zone.js:2702:25)
    at asyncToGenerator.js:14:1
    at updateComponent (index.js:1699:20)

Further investigation

1. removing all the html generated code does not show the error.
2. removing only the ion-app shows the error but also show the page

It feels like there is something wrong in the IonApp component

Expected Behavior

The app is shown in the browser and no error appears in the console

Steps to Reproduce

1. run ionic start test-app
2. run npm start from the app root directory
3. open the browser and navigate to localhost:4200 (nothing appears, only a black screen)
4. open also the console pressing F12 to see the error

Code Reproduction URL

https://stackblitz.com/~/github.com/scotch83/test-ionic-angular-standalone

Ionic Info

ionic info
[WARN] Error loading @capacitor/ios package.json: Error: Cannot find module '@capacitor/ios/package.json'

   Require stack:
   - /Users/scotch-83/.nvm/versions/node/v22.6.0/lib/node_modules/@ionic/cli/lib/project/index.js
   - /Users/scotch-83/.nvm/versions/node/v22.6.0/lib/node_modules/@ionic/cli/lib/index.js
   - /Users/scotch-83/.nvm/versions/node/v22.6.0/lib/node_modules/@ionic/cli/index.js
   - /Users/scotch-83/.nvm/versions/node/v22.6.0/lib/node_modules/@ionic/cli/bin/ionic

[WARN] Error loading @capacitor/android package.json: Error: Cannot find module '@capacitor/android/package.json'

   Require stack:
   - /Users/scotch-83/.nvm/versions/node/v22.6.0/lib/node_modules/@ionic/cli/lib/project/index.js
   - /Users/scotch-83/.nvm/versions/node/v22.6.0/lib/node_modules/@ionic/cli/lib/index.js
   - /Users/scotch-83/.nvm/versions/node/v22.6.0/lib/node_modules/@ionic/cli/index.js
   - /Users/scotch-83/.nvm/versions/node/v22.6.0/lib/node_modules/@ionic/cli/bin/ionic

Ionic:

Ionic CLI : 7.2.0 (/Users/scotch-83/.nvm/versions/node/v22.6.0/lib/node_modules/@ionic/cli)
Ionic Framework : @ionic/angular 8.3.0
@angular-devkit/build-angular : 18.2.3
@angular-devkit/schematics : 18.2.3
@angular/cli : 18.2.3
@ionic/angular-toolkit : 11.0.1

Capacitor:

Capacitor CLI : 6.1.2
@capacitor/android : not installed
@capacitor/core : 6.1.2
@capacitor/ios : not installed

Utility:

cordova-res : not installed globally
native-run : 2.0.1

System:

NodeJS : v22.6.0 (/Users/scotch-83/.nvm/versions/node/v22.6.0/bin/node)
npm : 10.8.2
OS : macOS Unknown

Additional Information

Ionic info did not find information about my mac:

MacOS Sonoma 14.5

Chip: Apple Silicon M2 Pro