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UrlMatcher running twice when matching a url pattern #57511

Description

@mattiLeBlanc

Which @angular/* package(s) are the source of the bug?

router

Is this a regression?

Yes

Description

I am using a URL Matcher in my routing config and it runs twice when I add loggin to my matching function.

{
    matcher: (url: UrlSegment[]) => {
      const groupPaths = Object.keys(groups);
      console.log(groupPaths);
      console.log(url);
      return url.length > 0 && groupPaths.includes(url[0].path) ? ({ consumed: url }) : null;
    },
    loadComponent: () => import('./shared/components/authenticated-layout/authenticated-layout.component').then(m => m.AuthenticatedLayoutComponent),
  },
image

I found a previous issue posted (#26081) which seems to address this but I am currently getting this in my A18 app.

This URL matcher is currently the only Route config for my app.
I am only loading my routes once in the main.ts

Check my stackblitz:
https://stackblitz.com/edit/stackblitz-starters-19lwxe?file=src%2Fmain.ts
If you navigate to url /foo or /bar you will notice the matcher executing twice.

Please provide a link to a minimal reproduction of the bug

https://stackblitz.com/edit/stackblitz-starters-19lwxe?file=src%2Fmain.ts

Please provide the exception or error you saw

<img width="490" alt="image" src="https://github.com/user-attachments/assets/08880c2c-8d15-4da7-90c5-390c19550355">

Please provide the environment you discovered this bug in (run ng version)

Angular CLI: 18.1.4
Node: 20.14.0
Package Manager: npm 8.19.1
OS: darwin arm64

Angular: 18.1.4
... animations, cdk, cli, common, compiler, compiler-cli, core
... forms, material, material-moment-adapter, platform-browser
... platform-browser-dynamic, router, youtube-player

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1801.4
@angular-devkit/build-angular   18.1.4
@angular-devkit/core            18.1.4
@angular-devkit/schematics      18.1.4
@schematics/angular             18.1.4
rxjs                            7.8.1
typescript                      5.5.4
zone.js                         0.14.10

Anything else?

No response

Activity

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